No. 4 Operational Training Unit RAAF

During the Second World War, the RAAF established eight operational training units (OTUs) to convert recently graduated air crews from advanced trainers to combat aircraft and to add fighting ability to the flying skills they had already learned.Stephens, The Royal Australian Air Force, p. 71
- Stephens, Going Solo, pp. 167–168, 364 No. 4 OTU was formed on 1 October 1942 at Williamtown to convert crews to the Vultee Vengeance dive bomber, 400 of which had been ordered by the RAAF (344 were eventually delivered).RAAF Historical Section, Training Units, p. 70Johnston, Whispering Death, p. 344 No. 4 OTU's inaugural commanding officer was Wing Commander E.G. Fyfe. The first pilots and wireless air gunner trainees arrived from No. 12 Squadron on 28 October 1942, and undertook a Vengeance conversion course that ran until 25 November. By the end of the month, No. 4 OTU's strength stood at seven Vengeances. These were augmented in January 1943 by the unit's first CAC Wirraway, which students flew before commencing their Vengeance conversion course.

OTUs, employing as they did warplanes that were more advanced and more powerful than trainers and teaching combat techniques that often carried high risk, generally suffered higher accident rates than other flying training schools.Johnston, Whispering Death, p. 30
- Mordike, The Home Front, p. 38 On 3 March 1943, a Wirraway of No. 4 OTU crashed near Williamtown, killing both crewmen. Two others died when their Vengeance crashed and burned near Goulburn during a cross-country exercise on 4 August.{{cite web|url=http://recordsearch.naa.gov.au/SearchNRetrieve/Interface/ViewImage.aspx?B=6950587|author=Royal Australian Air Force|title=Vengeance A27 [Accidents Part 2]|pages=4–7|via=National Archives of Australia|date=1943–44|access-date=22 March 2016}} On 16 August, a Vengeance flew into trees after apparently pulling out late from a dive, resulting in two fatalities.{{cite web|url=http://recordsearch.naa.gov.au/SearchNRetrieve/Interface/ViewImage.aspx?B=6950587|author=Royal Australian Air Force|title=Vengeance A27 [Accidents Part 2]|pages=62–65|via=National Archives of Australia|date=1943–44|access-date=22 March 2016}} A Vengeance blew up in flight during dive-bombing practice at Williamtown on 14 September, killing both crewmen.{{cite web|url=http://recordsearch.naa.gov.au/SearchNRetrieve/Interface/ViewImage.aspx?B=6950587|author=Royal Australian Air Force|title=Vengeance A27 [Accidents Part 2]|pages=9–12|via=National Archives of Australia|date=1943–44|access-date=22 March 2016}} On 5 October, a Vengeance on a dive-bombing exercise crashed into the sea near Newcastle; both crewmen were reported as missing, believed killed.{{cite web|url=http://recordsearch.naa.gov.au/SearchNRetrieve/Interface/ViewImage.aspx?B=6950586|author=Royal Australian Air Force|title=Vengeance A27 [Accidents Part 1]|pages=67–71|via=National Archives of Australia|date=1942–44|access-date=22 March 2016}} No. 4 OTU suffered two more fatalities when a Vengeance struck a hill near Braidwood during a cross-country flight on 26 November 1943.{{cite web|url=http://recordsearch.naa.gov.au/SearchNRetrieve/Interface/ViewImage.aspx?B=6950588|author=Royal Australian Air Force|title=Vengeance A27 [Accidents Part 3]|pages=53–56|via=National Archives of Australia|date=1943–44|access-date=22 March 2016}} Another Vengeance hit the water and exploded in Nelson Bay on 7 April 1944 after failing to recover from a dive, killing the two-man crew.{{cite web|url=http://recordsearch.naa.gov.au/SearchNRetrieve/Interface/ViewImage.aspx?B=6950588|author=Royal Australian Air Force|title=Vengeance A27 [Part 3]|pages=34–37|via=National Archives of Australia|date=1943–44|access-date=22 March 2016}}

On 1 December 1943, Squadron Leader R.E. Bell took over command of No. 4 OTU on a temporary basis, handing over to Flight Lieutenant R. Tuel-Wilkinson on 27 April 1944. The Vengeances had meanwhile been withdrawn from operations in the South West Pacific theatre, having flown their last combat mission on 8 March.{{cite book|author=Odgers|url=https://www.awm.gov.au/images/collection/pdf/RCDIG1070561--1-.pdf |title=Air War Against Japan|pages=196–198}} No. 4 OTU was disbanded on 30 April 1944. A small detachment remained to hand over the Williamtown base to an advance party of No. 5 OTU the following day.{{cite web |url=http://www.defence.gov.au/Raaf/organisation/info_on/bases/williamtown/history2.htm|access-date=20 March 2016|archive-url=https://web.archive.org/web/20070708234818/http://www.defence.gov.au/Raaf/organisation/info_on/bases/williamtown/history2.htm |archive-date=8 July 2007|title=Williamtown units during WWII|publisher=Royal Australian Air Force}} The rest of No. 5 OTU transferred from Tocumwal to Williamtown during July. By the time No. 4 OTU disbanded, the school's Vengeances had accumulated 7,593 flying hours and the Wirraways 7,646 hours.

• Vultee Vengeance in Australian service

{{Reflist|30em}}

• {{cite book|last=Johnston|first=Mark|author-link=Mark Johnston (historian)|title=Whispering Death: Australian Airmen in the Pacific War|year=2011|publisher=Allen & Unwin|location=Crows Nest, New South Wales|isbn=978-1-74175-901-3}}
• {{cite book|editor-last=Mordike| editor-first=John |year=1996|title=The Home Front – Mainland Australia and the Southwest Pacific Area 1939–1945: The Proceedings of the 1995 RAAF History Conference| publisher=Air Power Studies Centre|location=Canberra |url=http://airpower.airforce.gov.au/admin/productfiles/publication/materials/202/conf09_thehomefront.pdf|isbn=0-642-24551-7}}
• {{cite book|last=Odgers | first=George |author-link=George Odgers|orig-year=1957| year=1968| title=Australia in the War of 1939–1945: Series Three (Air) Volume II – Air War Against Japan 1943–1945 | location=Canberra| publisher=Australian War Memorial| url=https://www.awm.gov.au/collection/RCDIG1070210/|oclc=1990609}}
• {{cite book|author=RAAF Historical Section|year=1995|title=Units of the Royal Australian Air Force: A Concise History. Volume 8: Training Units|location=Canberra|publisher=Australian Government Publishing Service|isbn=0-644-42800-7|url=http://airpower.airforce.gov.au/publications/Details/550/Units-of-the-RAAF-Volume-8---Training-Units.aspx?p=print}}
• {{cite book|last=Stephens| first=Alan| year=1995| title=Going Solo: The Royal Australian Air Force 1946–1971|location=Canberra|publisher=Australian Government Publishing Service|url=http://airpower.airforce.gov.au/Publications/Details/214/Going-Solo-The-Royal-Australian-Air-Force-19461971.aspx|isbn=0-644-42803-1}}
• {{cite book|last=Stephens| first=Alan|orig-year=2001|year=2006| title=The Royal Australian Air Force: A History|location=London| publisher=Oxford University Press|isbn=0-19-555541-4}}

• {{cite book|last=Lever|first=John|title=No. 4 OTU RAAF Williamtown and RAAF Vultee Vengeance Operations|year=1999|publisher=Self-published|location=Koorlong, Victoria|isbn=187670912X}}

4

Category:Military units and formations established in 1942

Category:Military units and formations disestablished in 1944