Aero Commander 500 family#Commander 690

{{Short description|Family of twin-engine utility transport aircraft}}

{{Use American English|date=February 2022}}

{{Use dmy dates|date=August 2019}}

{{Infobox aircraft

|name = Aero Commander twins

|image = Jetprop 1000.jpg

|caption = 690C Jetprop 1000

|type = Utility and business aircraft

|national_origin= United States

|manufacturer = Aero Design and Engineering Company
Aero Commander
Rockwell-Standard Corporation
North American Rockwell
Rockwell International
Gulfstream Aerospace

|designer =

|first_flight = 23 April 1948 (Model L3085)

|introduction = October 1952

|retired =

|status = Active

|primary_user

|more_users =

|produced = 1951–1986

|number_built = ~2,902 (1951 piston-engined, 951 turboprops)

|developed_from =

|variants =

|developed_into = IAI Westwind

}}

The Aero Commander 500 family is a series of light twin piston-engined and turboprop aircraft originally built by the Aero Design and Engineering Company in the late 1940s, renamed the Aero Commander company in 1950, and later a division of Rockwell International in 1965. Final production occurred in 1986 under the Gulfstream Aerospace name. The initial production version was the {{cvt|200|mph|km/h kn}}, seven-seat Aero Commander 520. An improved version, the 500S, manufactured after 1967, is known as the Shrike Commander. Larger variants are known by numerous model names and designations, ranging up to the {{cvt|330|mph|km/h kn}}, 11-seat Model 695B/Jetprop 1000B turboprop.{{Cite web |title=Rockwell U-9A Aero Commander

|url=http://www.marchfield.org/u9.htm |url-status=dead |archive-url=https://web.archive.org/web/20070818002029/http://www.marchfield.org/u9.htm |archive-date=18 August 2007 |access-date=1 August 2007 |publisher=March Field Air Museum}}

As of recent, the Aero Commander is known as the Twin Commander.

Design and development

File:Rockwell YU-9A Aero Commander ‘0-26218’ (26998882710).jpgs]]

The idea for the Commander light business twin was conceived by Ted Smith, a project engineer at the Douglas Aircraft Company.{{Cite journal |last=Collman |first=B.J. |date=May–June 1973 |title=The Aero Commander Twins |journal=Air-Britain Digest |volume=15 |issue=3 |pages=79–86}} Working part-time after hours throughout 1944, a group of A-20 engineers formed the Aero Design and Engineering Company to design and build the proposed aircraft with a layout similar to their A-20 bomber.{{Cite journal |last=Williams |first=Nicholis M |date=Spring 1990 |title=The Aero Commander 520 |journal=AAHS Journal}} Originally, the new company was going to build three pre-production aircraft, but as the first aircraft was being built, they decided to build just one prototype. The final configuration was completed in July 1946 and was designated the Model L3805.

Registered NX1946, the prototype first flew on 23 April 1948. The L3805 accommodated up to five people and was powered by two Lycoming O-435-A piston engines., it was an all-metal high-wing monoplane with retractable undercarriage using components from a Vultee BT-13 Valiant. The market segment planned for this aircraft to be sold to small feeder airliner firms and was originally designed to carry seven passengers, but instead found use in the private business aircraft and military market.{{Cite magazine |date=August 1948 |title=What's New in Aviation: Feederliner Makes Debut |url=https://books.google.com/books?id=QCgDAAAAMBAJ&pg=PA90 |magazine=Popular Science |volume=153 |issue=2 |page=90}} Walter Beech test flew the aircraft in 1949 and expressed interest in buying the project, but passed on it, to instead develop the Beechcraft Twin Bonanza. Fairchild Aircraft also evaluated the prototype at its Hagerstown, Maryland, headquarters.

The prototype flew successfully and the company leased, at no cost, a new {{convert|26000|sqft}} factory at Bethany near Oklahoma City to build a production version, certified on 30 June 1950. Nearly 10,000 hours of redesign work went into the model, including more powerful Lycoming GO-435-C2 engines, with a combined rating of {{convert|520|hp}}. The production model was named the Commander 520. The first Commander 520 was rolled out of the new factory in August 1951. Serial number 1 was used as a demonstrator, then sold in October 1952 to the Asahi Shimbun Press Company of Tokyo.{{citation needed|date=July 2019}}

Operational history

File:Scott Broo N45RF NOAA.jpg]]

In military service it was initially designated the L-26, though in 1962 this was changed to U-4 for the United States Air Force and U-9 for the United States Army.

Under ownership of Rockwell in the 1960s, World War II pilot R. A. "Bob" Hoover demonstrated the Shrike Commander 500S for decades in a variety of "managed energy" routines, including single-engine and engine-out aerobatics.{{Cite magazine |date=July 1972 |title=Shrike Commander |magazine=Flying |pages=72–73, 76}}{{Cite magazine |last=Collins |first=Richard L. |date=January 1999 |title=Grand Renaissance: The rebirth of the tough bird |magazine=Flying |volume=126 |issue=1 |pages=80–83}} His Shrike Commander is displayed in the colors of his last sponsor, Evergreen International Aviation, at the Steven F. Udvar-Hazy Center of the Smithsonian National Air and Space Museum. Bob Odegaard continued the tradition in 2012, flying a 1975 Shrike 500S in a Bob Hoover tribute routine.{{Cite journal |date=June 2011 |title=missing |journal=Sport Aviation |page=30}}

One U-4B became a presidential transport aircraft for Dwight D. Eisenhower between 1956 and 1960.{{Citation needed|date=February 2021}} This was the smallest "Air Force One", and the first to wear the now-familiar blue-and-white livery.{{Citation needed|date=February 2021}} This aircraft is now owned by the Commemorative Air Force.{{Cite web |title= President Eisenhower's Twin-Engine Air Force One|url=https://www.ikesbird.org/ |url-status=dead |archive-url=https://web.archive.org/web/20201027010342/https://www.ikesbird.org/ |archive-date=27 October 2020 |website=Ike's Bird}}

As of 2004 Shrike Commanders remained in service with the United States Customs Service, United States Coast Guard, and United States Forest Service.

A single 560F was operated by the Belgian Air Force as the personal transport of the late king Baudouin of Belgium from 1961 to 1973.{{Cite web |title=Aerocommander 560f |url=http://www.baha.be/Webpages/Navigator/Photos/MilltaryPics/post_ww2/aerocommander_560f.htm |archive-url=https://web.archive.org/web/20100217014625/http://www.baha.be/Webpages/Navigator/Photos/MilltaryPics/post_ww2/aerocommander_560f.htm |archive-date=17 February 2010}}

According to the July 1, 1968, Frontier Airlines system timetable, series 500 aircraft were being operated on scheduled passenger flights by Combs Aviation on behalf of Frontier via a contract agreement with service to several smaller communities in Montana and Wyoming at this time.{{Cite web |title=fl6807-1 JPG file |url=https://www.timetableimages.com/ttimages/fl/fl6807/fl6807-1.jpg}}{{Cite web |title=fl6807-4 JPG file |url=https://www.timetableimages.com/ttimages/fl/fl6807/fl6807-4.jpg}}

The unpressurized, long-fuselage 680FL was operated as a small package freighter by Combs Freightair in the 1970s and 1980s, and by Suburban Air Freight in the 1980s and 1990s. The aircraft was popular with pilots, because it was extremely "pilot friendly" and with its {{cvt|380|hp}} supercharged engines did well in icing meteorological conditions. A number are still operated on contracts for cargo and fire control applications, as their piston engines offer good fuel specifics at low altitudes and longer loiter times. Suburban retired their last 680FLs in the first half of 2024.

=Wing spar fatigue=

Beginning in June 1991, senior engineers met with FAA officials to discuss concerns over the Aero Commander's main wing spar, which was believed to be susceptible to stress fatigue and subsequent cracking, and was believed to have resulted in a number of fatal crashes.{{Citation |last=Swift |first=S. J. |title=The Aero Commander chronicle |date=1 May 1995 |url=http://www.casa.gov.au/wcmswr/_assets/main/airworth/papers/aerocommander.pdf |publisher=Civil Aviation Safety Authority |access-date=1 August 2007}} From approximately 1961 to 1993, 24 aircraft crashed when spar failures caused the loss of the wing in flight. 35 more spars were found cracked during inspections.

=Single-engine safety=

In 1950, when the developers were working to satisfy Civil Aeronautics Authority (CAA) regulations for certification of the 500, they chose a novel method of demonstrating its single-engine safety and performance: they removed one of the two-bladed propellers, secured it in the aft cabin, and flew from Bethany to Washington, D.C., on one engine. There they met with CAA personnel, then replaced the propeller and returned to Oklahoma in the conventional manner. The flight received nationwide coverage in the press.{{Cite web |last=Harris |first=Richard |title=The Aero Commander Line – A short history |url=http://home.iwichita.com/rh1/hold/av/avhist/acm/acm_hist.htm |url-status=live |archive-url=https://web.archive.org/web/20110713071028/http://home.iwichita.com/rh1/hold/av/avhist/acm/acm_hist.htm |archive-date=13 July 2011 |access-date=13 August 2011}}{{Cite book |last=Smith |first=Thomas Motley |url=http://worldcat.org/oclc/7958067 |title=Multiengine Airplane Rating: A Guide to the FAA Oral and Flight Tests |date=1981 |publisher=Pan American Navigation Service |isbn=0-87219-003-X |oclc=7958067}}

In 1979, the National Transportation Safety Board reviewed light-twin engine-failure accidents, involving the 24 most popular model-groups of light twins between 1972 and 1976. They found that the piston-engined twin-Commanders had averaged slightly over 3.4 engine-failure accidents per hundred-thousand hours, the second worst number of all aircraft under review.{{Cite web |year=1979 |title=Special Study: "Light Twin-Engine Aircraft Accidents Following Engine Failures, 1972–1976 NTSB-AAS-79-2 |url=http://libraryonline.erau.edu/online-full-text/ntsb/aviation-special-studies/AAS79-02.pdf |access-date=16 May 2017 |publisher=National Transportation Safety Board |location=Washington, D.C.}}{{Cite book |title=Aviation Consumer's Used Aircraft Guide |publisher=Belvoir Publications |year=2001 |editor-last=Ibold |editor-first=Ken |edition=9 |volume=2 |location=Greenwich, Connecticut}} The most engine failures were suffered by the small-engine versions of the Piper Apache, at 6.9 failures per hundred thousand hours; the third-worst, the Beechcraft Travel Air, averaged 2.9 failures; the average for all models was only 1.6.

Countering the statistical evidence, Rockwell demonstration pilot Bob Hoover's famous airshow stunt routine, with the Shrike Commander, included a full aerobatic routine performed first with both engines, then with one engine out (and the critical engine, at that), then both engines out, and gliding. Then in his final airshow performance, in a supreme demonstration of conservation of momentum, he did all that, then landed the Shrike Commander dead stick (engines off), coasted the airplane down the runway then from the runway down the taxiway and silently let the craft roll slowly to a full stop right in front of the crowd.{{Cite web |last=Cochrane |first=Dorothy |date=20 February 2014 |title=Robert A_ "Bob" Hoover, The Greatest Stick and Rudder Man, is Honored in Hollywood |url=https://airandspace.si.edu/stories/editorial/robert-%E2%80%9Cbob%E2%80%9D-hoover-greatest-stick-and-rudder-man-honored-hollywood |access-date=16 May 2017 |website=Smithsonian National Air and Space Museum |location=Washington, D.C.}}{{Cite web |date=25 October 2016 |title=Bob Hoover flies west |url=https://generalaviationnews.com/2016/10/25/bob-hoover-flies-west/ |access-date=29 August 2020 |website=GeneralAviationNews.com}}{{Cite web |title=Bob Hoover's Last Air Show | date=15 June 2015 |url=https://www.youtube.com/watch?v=tnl3JZwnUZA |via=YouTube}}

The turboprop twin-Commanders—with much more powerful engines (and most with longer bodies, allowing greater rudder leverage, critical for single-engine control{{Cite book |url=https://www.aopa.org/training-and-safety/pic-archive/flight-training-ratings-and-proficiency/checkout-in-a-multiengine-airplane |title=Flight Training Handbook Advisory Circular 61-21A |publisher=Federal Aviation Administration |chapter=Checkout in a Multiengine Airplane}}) – came out on the opposite end of the rankings, with one of the lowest rates of engine-failure accidents of all "light" twins examined, at only 0.4 per hundred-thousand hours.

Variants

File:N2775B Aero Commander 560A (8970562183).jpg|Certified from 1954, the seven-seat 560 is powered by two {{cvt|270|-|295|HP}} Lycoming GO-480s.

File:Aero Commander 680E, Private JP6986096.jpg|From 1955, the 680 has Supercharged {{cvt|340|-|380|HP}} Lycoming GSO-480s.

File:N534SA 1968 Rockwell International 500-S C-N 1816-22 - Spur Aviation Services Lc (5931360073).jpg|From 1958, the lighter 500 is powered by two {{cvt|250|-|290|hp}} Lycoming O-540s or Continental IO-470s.

File:Aero Commander 680FL Grand Commander, Air Tempelhof JP7541608.jpg|From 1963, the stretched 680-FL offered up to eleven seats.

File:Bridger Aerospace N681TC Aero Commander 681.jpg|It gained two {{cvt|575|hp}} AiResearch TPE-331 turboprops from the 680-T in 1965.

File:A Iranian police Aero Commander 690.jpg|From 1971, the heavier 690 has a larger wing and more powerful {{cvt|717.5|-|748|hp|0}} TPE-331s.

File:NOAA Aircraft N45RF KDLH (cropped).jpg|From 1979, the final 695 Jetprop 980/1000 is powered by {{cvt|733|-|820|hp}} TPE-331s.

class="wikitable sortable"

|+ Type certificate data sheet 6A1{{Cite web |date=September 25, 2015 |title=Type Certificate data sheet No. 6A1 |url=https://rgl.faa.gov/Regulatory_and_Guidance_Library/rgMakeModel.nsf/0/a915391f2b98213b86257edd005e95e1/$FILE/6A1_Rev_48.pdf |publisher=FAA |access-date=27 January 2022 |archive-date=19 June 2022 |archive-url=https://web.archive.org/web/20220619203419/https://rgl.faa.gov/Regulatory_and_Guidance_Library/rgMakeModel.nsf/0/a915391f2b98213b86257edd005e95e1/$FILE/6A1_Rev_48.pdf |url-status=dead }} and 2A4{{Cite web |date=September 25, 2015 |title=Type Certificate data sheet No. 2A4 |url=https://rgl.faa.gov/Regulatory_and_Guidance_Library/rgMakeModel.nsf/0/936324216d26299c86257edd005e58bc/$FILE/2A4_Rev_49.pdf |archive-url=https://web.archive.org/web/20161102143522/http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgMakeModel.nsf/0/936324216d26299c86257edd005e58bc/%24FILE/2A4_Rev_49.pdf |url-status=dead |archive-date=2 November 2016 |publisher=FAA }}

! model

nameapprovedTCenginespowerMTOWceilingseatsfuelbuilt{{efn|name=cn|{{cn|date=January 2022}}}}
L-3805

| || || || || || || || || || 1

520

| || 1952-01-31 || 6A1 || 2× GO-435-C2/C2B || 2× 260 || 5500-5700 || || 5 || 145 || 150

rowspan=2 | 560

| || 1954-05-28 || 6A1 || 2× GO-480-B/B1C || 2× 270 || 6000 || || 7 || 145 || 80

colspan=10 | 520 with more power, increased weight, swept tail, plus revised wing, landing gear, fuselage, and primary control system
rowspan=2 | 560A

| || 1955-07-01 || 6A1 || 2× GO-480-D/C/G || 2× 275 || 6000 || || 7 || 156 ||

colspan=10 | 560 with longer fuselage, revised engine installation, wing, landing gear, fuel and oil systems
rowspan=2 | 560E

| || 1957-02-21 || 6A1 || 2× GO-480-C/G || 2× 295 || 6500 || || 7 || 223 || 93

colspan=10 | 560A with Larger wings and greater payload, revised engine installation, wing, wheel and brake installation, fuel system with outboard tanks, and landing gear location
rowspan=2 | 560F

| || 1961-02-08 || 2A4 || 2× IGO-540-B || 2× 350 || 7500 || || 7 || 223 ||

colspan=10 | 680F with normally aspirated engine and reduced gross weight
rowspan=2 | 360

| || || || || 2× 180 || || || 4 || || 1

colspan=10 | Lightened 560E
rowspan=2 | 500

| || 1958-07-24 || 6A1 || 2× O-540-A2B || 2× 250 || 6000 || || 7 || 156 || 101

colspan=10 | 560E with decreased gross weight, powerplants, and 560A landing gear
rowspan=2 | 500A

| Aero Commander || 1960-04-07 || 6A1 || 2× IO-470-M || 2× 260 || 6000 || || 7 || 156 || 99

colspan=10 | 500 with new nacelles, fuel injected Continental engines and new landing gear
rowspan=2 | 500B

| || 1960-07-13 || 6A1 || 2× IO-540-B/E || 2× 290 || 6750 || || 7 || 156 || 217

colspan=10 | 500A with Lycoming engines and 3-bladed props.
rowspan=2 | 500U

| Shrike Commander || 1964-12-11 || 6A1 || 2× IO-540-E ||2× 290 || 6750 || || 7 || 156 || 56

colspan=10 | 500B with pointed nose and squared off tail.
rowspan=2 | 500S

| Shrike Commander || 1968-03-15 || 6A1 || 2× IO-540-E || 2× 290 || 6750 || || 7 || 156 || 316

colspan=10 | 500U with minor changes{{harvnb|Simpson|1995}}{{pn|date=May 2021}}
rowspan=2 | 680 Super

| L-26C → U-4B{{efn|2 built for the US Air Force}}
L-26C → U-9C{{efn|4 built for the US Army}} || 1955-10-14 || 2A4 || 2× GSO-480-A1A6 || 2× 340 || 7000 || || 7 || 223 || 254

colspan=10 | supercharged 560A{{efn|name=cn}}
rowspan=2 | 680E

| || 1958-06-19 || 2A4 || 2× GSO-480-B1A6 || 2× 340 || 7500 || || 7 || 223 || 100

colspan=10 | 680 with Lightened 560E/560A type undercarriage{{efn|name=cn}}, extended wing and increased maximum weight
rowspan=2 | 720

| AltiCruiser || 1958-12-05 || 2A4 || 2× GSO-480-B1A6 || 2× 340 || 7500 || || 6 || 223 || 13

colspan=10 | Pressurized 680-E, structural modifications to the fuselage, extended wing and increased maximum weight
rowspan=2 | 680F

| || 1960-08-23 || 2A4 || 2× IGSO-540-B || 2× 380 || 8000 || || 7 || 223 || 126

colspan=10 | 680E with fuel injection engine, new nacelles, new main gear and increased maximum weight
rowspan=2 | 680FP

| || || || || 2× 380 || || || || 223 || 26

colspan=10 | Pressurized 680F{{efn|name=cn}}
rowspan=2 | 680FL

| Grand Commander|| 1963-05-24 || 2A4 || 2× IGSO-540-B || 2× 380 || 7000-8500 || || 11 || 223 || 157

colspan=10 | 680F with larger tail, 2 built for the US Army as the RL-26D → RU-9D with {{abbr|SLAR|side looking airborne radar}}, Courser Commander after 1967;{{efn|name=cn}} stretched
rowspan=2 | 680FL(P)

| Grand Commander || 1964-10-08 || 2A4 || 2× IGSO-540-B1A/B1C || 2× 380 || 8500 || || 11 || 223 || 37

colspan=10 | pressurized 680FL
rowspan=2 | 680T

| Turbo Commander || 1965-09-15 || 2A4 || 2× TPE-331-43 || 2× 575 || 8950 || 25,000 ft || 11 || 286.5 || 56

colspan=10 | 680FL/P turboprop{{efn|name=cn}}
rowspan=2 | 680V

| Turbo Commander || 1967-06-13 || 2A4 || 2× TPE-331-43 || 2× 575 || 9400 || 25,000 ft || 11 || 286.5 || 36

colspan=10 | 680T with slightly improved cargo capacity{{efn|name=cn}}
rowspan=2 | 680W

| Turbo II Commander || 1968-02-05 || 2A4 || 2× TPE-331-43BL || 2× 575 || 9400 || 25,000 ft || 11 || 286.5 || 46

colspan=10 | 680V with pointed nose. squared off fin, one panoramic and two small cabin windows and weather radar{{efn|name=cn}}
rowspan=2 | 681

| Hawk Commander || 1969-03-20 || 2A4 || 2× TPE-331-43BL || 2× 575 || 9400 || 25,000 ft || 11 || 286.5 || 43

colspan=10 | 680W with improved pressurisation, air conditioning system and nose{{efn|name=cn}}
rowspan=2 | 681B

| Turbo Commander || || || || || || 25,000 ft || || || 29

colspan=10 | Marketing designation for economy version of the 681{{efn|name=cn}}
rowspan=2 | 685

| Commander || 1971-09-17 || 2A4 || 2× GTSIO-520-F/K || 2× 435 || 9000 || 25,000 ft || 9 || 256-322 || 66

colspan=10 | 690 powered by piston engines{{efn|name=cn}}
rowspan=2 | {{visible anchor|690}}

| Commander 690 || 1971-07-19 || 2A4 || 2× TPE-331-5 || 2× 717.5 || 10250 || 25,000 ft || 11 || 384 || 79

colspan=10 | 681 with new wing centre section and engines moved further outboard{{efn|name=cn}}
rowspan=2 | {{visible anchor|690A}}

| Commander 690A || 1973-04-25 || 2A4 || 2× TPE-331-5 || 2× 717.5 || 10250 || 31,000 ft || 11 || 384 || 245

colspan=10 | 690 with changed flightdeck layout and increased pressurisation{{efn|name=cn}}
rowspan=2 |{{visible anchor|690B}}

| Commander 690B || 1976-10-05 || 2A4 || 2× TPE-331-5 || 2× 717.5 || 10325 || 31,000 ft || 10 || 384 || 217

colspan=10 | 690A with improved soundproofing and internal lavatory{{efn|name=cn}}
rowspan=2 | 690C

| Jetprop 840 || 1979-09-07 || 2A4 || 2× TPE-331-5 || 2× 717.5 || 10325 || 31,000 ft || 11 || 384 || 136

colspan=10 | 690B with increased wingspan, wet wing fuel tanks and winglets{{efn|name=cn}}
rowspan=2 | 690D

| Jetprop 900 || 1981-12-02 || 2A4 || 2× TPE 331-5 || 2× 748 || 10700 || 31,000 ft || 11 || 425-474 || 42

colspan=10 | 690C with internal rear cabin extension, improved pressurisation and five square cabin windows{{efn|name=cn}}
rowspan=2 | 695

| Jetprop 980 || 1979-11-01 || 2A4 || 2× TPE-331-10 || 2× 733 || 10325 || 31,000 ft || 11 || 425-474 || 84

colspan=10 | more powerful 690C{{efn|name=cn}}
rowspan=2 | 695A

| Jetprop 1000 || 1981-04-30 || 2A4 || 2× TPE-331-10 || 2× 820 || 11200 || 35,000 ft || 11 || 474 || 101

colspan=10 | more powerful 690D with higher takeoff weight, built for the NOAA{{efn|name=cn}}
rowspan=2 | 695B

| Jetprop 1000B || 1984-02-15 || 2A4 || 2× TPE-331-10 || 2× 820 || 11750 || 35,000 ft || 11 || 474 || 6

colspan=10 | 695A with minor changes{{efn|name=cn}}

Operators

=Government operators=

{{columns-list|colwidth=25em|

;{{USA}}

  • Texas Highway Patrol{{Cite web |title=TxDPS – Aircraft History |url=http://www.dps.texas.gov/aviationoperationsupport/history.htm |access-date=27 August 2018 |website=dps.texas.gov |archive-date=28 August 2018 |archive-url=https://web.archive.org/web/20180828035559/http://www.dps.texas.gov/aviationoperationsupport/history.htm |url-status=dead }}

;{{IDN}}

  • Indonesian National Police{{Cite web |last=Seymour |first=Paul |date=28 December 2018 |title=AERO COMMANDER 560A, P-2001 / 310-73, INDONESIAN POLICE / POLISI |url=https://abpic.co.uk/pictures/view/1635326 |access-date=1 April 2021 |website=abpic.co.uk}}

}}

=Military operators=

{{columns-list|colwidth=25em|

;{{ALG}}

  • Algerian Air Force – 1 x 680E survey aircraft in 1986{{Harvnb|Flight International 29 November 1986|p=32}}

;{{ANG}}

  • Angolan Air Force – 1 x 690A VIP aircraft in 1986{{Harvnb|Flight International 29 November 1986|p=33}}

;{{ARG}}

;{{BAH}}

  • Royal Bahamas Defence Force – 500S (no longer operated){{Cite web |date=9 April 2016 |title=Royal Bahamas Defence Force (RBDF) – Air Wing |url=http://www.lamilitary.org/royal-bahamas-defence-force-rbdf-air-wing/ |website=LA MILITARY}}

;{{BEN}}

;{{BOL}}

  • Bolivian Air Force – 1 x 690 in 1986{{Harvnb|Flight International 29 November 1986|p=37}}

;{{BFA}}

;{{COL}}

  • Colombian Aerospace Force{{Cite web |year=2022 |title=World Air Forces 2022 |url=https://www.flightglobal.com/reports/world-air-forces-directory-2022/146695.article |url-access=registration |access-date=17 July 2022 |website=FlightGlobal}}
  • National Army of Colombia{{Cite web |title=División de Aviación Asalto Aéreo incorpora nuevo avión Turbo Commander 690D |url=http://www.webinfomil.com/2014/03/turbo-commander-ejercito-colombia.html |access-date=19 December 2016 |website=webinfomil.com|date=10 March 2014 }}

;{{CRI}}

;{{CUB}}

  • Cuban Air Force – 1 × 560 acquired in late 1956.{{harvnb|Hagedorn|1993|p=18}}

;{{DOM}}

;{{GRE}}

;{{GUA}}

;{{HON}}

  • Honduran Air Force{{Cite web |date=4 December 2020 |title=World Air Forces 2021 |url=https://www.flightglobal.com/download?ac=75345 |access-date=10 August 2021 |website=FlightGlobal}}

;{{IDN}}

;{{IRN}}

;{{CIV}}

;{{KEN}}

  • Kenya Air Force – 1 x 680FP (no longer operated){{harvnb|Andrade|1982|p=141}}

;{{flagicon|Laos|1952}} Kingdom of Laos

  • Royal Lao Air Force – 1 x 560 (no longer operated){{Cite web |title=Royal Lao Air Force Aircraft Types |url=http://www.aeroflight.co.uk/waf/aa-eastasia/laos/laos-af2-all-time.htm |access-date=19 December 2016 |website=aeroflight.co.uk}}

;{{ROK}}

;{{MEX}}

;{{NIC}}

;{{NIG}}

;{{PAK}}

;{{PAN}}

;{{PHI}}

  • Philippine Air Force - 2 Units for ELINT.{{cite web |url= https://www.flightglobal.com/download?ac=106507 |title= World Air Forces 2025 |publisher= Flightglobal Insight |year= 2024 |access-date= 10 December 2024}}

;{{THA}}

  • Royal Thai Air Force – Aero Commander 690A, locally designated B.PhTh.4 ({{langx|th|บ.ผท.๔}}).{{Harvnb|Flight International 29 November 1986|p=92}}{{Cite web |title=Thai Military Aircraft Designations |url=https://designation-systems.net/non-us/thailand.html |access-date=2025-03-18 |website=designation-systems.net}}

;{{USA}}

;{{VEN}}

}}

=Civil operators=

;{{SAM}}

  • Talofa Airways{{Cite journal |year=2016 |title=When in Samoa, fly with Talofa and its Twin Commanders |url=http://flightlevelsonline.com/2016/spring-2016/samoa-fly-talofa-twin-commanders/ |journal=Flight Levels Online |volume=21 |issue=3}}

Notable accidents

  • On 19 June 1964 Senator Ted Kennedy was a passenger in an Aero Commander 680 airplane flying in bad weather from Washington, D.C., to Massachusetts. It crashed into an apple orchard in the western Massachusetts town of Southampton on the final approach to the Barnes Municipal Airport near Westfield.{{Cite magazine |date=26 June 1964 |title=Teddy's Ordeal |magazine=Time |url=http://www.time.com/time/printout/0,8816,898150,00.html |url-status=dead |access-date=23 May 2008 |archive-url=https://archive.today/20130204184340/http://www.time.com/time/printout/0,8816,898150,00.html |archive-date=4 February 2013}}{{Cite web |date=8 May 2008 |title=The Luck of the Kennedys |url=http://www.check-six.com/Crash_Sites/Kennedy-N344S.htm |url-status=live |archive-url=https://web.archive.org/web/20090201075014/http://www.check-six.com/Crash_Sites/Kennedy-N344S.htm |archive-date=1 February 2009 |access-date=24 February 2009 |publisher=Check-Six.com}} The pilot and Edward Moss, one of Kennedy's aides, were killed.{{Cite news |date=July 1999 |title=John F. Kennedy Jr. – Timeline: Misfortunes of a Family |publisher=CNN |url=http://www.cnn.com/interactive/specials/9907/kennedy.tragedy.glance/frameset.exclude.html |access-date=23 May 2008 |archive-url=https://web.archive.org/web/20080323142249/http://www.cnn.com/interactive/specials/9907/kennedy.tragedy.glance/frameset.exclude.html |archive-date=23 March 2008}} Kennedy suffered a severe back injury, a punctured lung, broken ribs and internal bleeding.{{Cite news |last=Swidey |first=Neil |date=16 February 2009 |title=Chapter 2: The Youngest Brother: Turbulence and tragedies eclipse early triumphs |work=The Boston Globe |url=http://www.boston.com/news/nation/articles/2009/02/16/chapter_2_the_youngest_brother/ |url-status=live |access-date=24 February 2009 |archive-url=https://web.archive.org/web/20090222210906/http://boston.com/news/nation/articles/2009/02/16/chapter_2_the_youngest_brother/ |archive-date=22 February 2009}}
  • World War II hero and actor Audie Murphy died in an Aero Commander 680 crash while flying as a passenger on 28 May 1971. The aircraft was flying in bad weather at night and was on approach to Roanoke, Virginia when it flew into the side of Brush Mountain outside Blacksburg, Virginia, West of Roanoke. Four others and the pilot were also killed.{{Cite web |date=1 August 2007 |title=Biography for Audie Murphy |url=https://www.imdb.com/name/nm0001559/bio |access-date=1 August 2007 |publisher=IMDb}}
  • On 11 August 2002 photographer Galen Rowell, his wife Barbara Cushman Rowell, pilot Tom Reid and Reid's friend Carol McAffee were killed in an Aero Commander 690 crash near Eastern Sierra Regional Airport in Bishop, California.{{Cite web |last=Delgado |first=Ray |date=12 August 2002 |title=Galen Rowell 1940–2002 |url=http://www.sfgate.com/news/article/Galen-Rowell-1940-2002-Wilderness-photographer-2783900.php |access-date=27 November 2016 |website=San Francisco Chronicle |publisher=Hearst Communications Inc.}}
  • On Sunday 2 October 1994, an Aero Commander 690 operated by Seaview Air as flight CD111 departed for from Williamtown, NSW, on a flight to Lord Howe Island. Eight passengers, including honeymooners and a family with two children, boarded the single-pilot aircraft. 30 minutes after departure a distress call was made by the pilot with no future communications made. Only some minor wreckage was ever recovered. During the investigation a number of safety breaches by the operator were discovered including regular operations with overweight aircraft, inaccessible safety equipment & illegal regular public transport operations when the operator was only approved to operate charter flights. The incident was a significant one to occur in Australia & lead to a $20 million royal commission which resulted into fundamental changes to the governing aviation body in Australia.{{cite web |title=INVESTIGATION REPORT 9402804 Rockwell Commander 690B VH-SVQ en route Williamtown to Lord Howe Island New South Wales 2 October 1994 |url=https://www.atsb.gov.au/sites/default/files/media/24362/aair199402804_001.pdf |website=Bureau of Air Safety Investigation |access-date=12 October 2024}}

Specifications (Rockwell Aero Commander 500S)

File:Aero Commander L-26B 3-view line drawing.png

{{Aircraft specs

|prime units?=imp

|ref=Jane's all the world's aircraft 1976–77.{{harvnb|Taylor|1976|pp=346–347}}

|crew=Two

|capacity=four passengers

|length ft=36

|length in=9.75

|length m=11.22

|span ft= 49

|span in=0.5

|span m=14.95

|height ft=14

|height in=6

|height m=4.42

|wing area sqft=255

|wing area sqm=23.69

|airfoil=NACA 23012 modified

|aspect ratio=9.45:1

|empty weight lb=4635

|empty weight kg=2102

|max takeoff weight lb=6750

|max takeoff weight kg=3062

|eng1 name=Lycoming IO-540-E1B5

|eng1 type=air-cooled flat-six piston engines

|eng1 number=2

|eng1 hp=290

|eng1 kw=216

|max speed mph=215

|max speed kts=187

|max speed kmh=346

|max speed note=at sea level (TAS)

|cruise speed mph=203

|cruise speed kts=176

|cruise speed kmh=326

|cruise speed note=at 9,000 ft (2,750 m), 75% power, TAS

|stall speed mph=68

|stall speed kts=59

|stall speed kmh=109

|stall speed note=flaps and landing gear down, CAS

|minimum control speed mph=75

|range miles= 1078

|range nmi=936

|range km=1735

|ceiling ft=19400

|ceiling m=5913

|climb rate ftmin=1340

|climb rate ms=6.8

|avionics=

}}

See also

{{Aircontent

|related=

|similar aircraft=

|lists=

|see also=

}}

References

=Notes=

{{reflist|group=lower-alpha}}

{{Reflist}}

=Bibliography=

  • {{Cite book |last=Andrade |first=John |title=U.S. Military Aircraft Designations and Serials since 1909 |publisher=Midland Counties Publications |year=1979 |isbn=0-904597-22-9}}
  • {{Cite book |last=Andrade |first=John |title=Militair 1982 |publisher=Aviation Press Limited |year=1982 |isbn=0-907898-01-7 |location=London}}
  • {{Cite book |last=Hagedorn |first=Daniel P. |title=Central American and Caribbean Air Forces |publisher=Air-Britain (Historians) |year=1993 |isbn=978-0851302102 |location=Kent, UK}}
  • {{Cite magazine |last=Hatch |first=Paul F. |date=29 November 1986 |title=World's Air Forces 1986 |url=https://www.flightglobal.com/pdfarchive/view/1986/1986%20-%203176.html |magazine=Flight International |volume=130 |issue=4039 |pages=30–104 |issn=0015-3710 |ref={{harvid|Flight International 29 November 1986}}}}
  • {{Cite book |last=Simpson |first=R.W. |title=Airlife's general aviation |publisher=Airlife publishing |year=1995 |isbn=1-85310-577-5}}
  • {{Cite book |last=Taylor |first=John W.R. |title=Jane's all the world's aircraft 1976–77 |publisher=Jane's yearbooks |year=1976 |isbn=0-354-00538-3 |location=London |author-link=John W. R. Taylor}}