Israel Aircraft Industries 1124 accident near Yukon, OK
On March 18, 2019, an Israel Aircraft Industries 1124 (airplane) was involved in an accident near Yukon, OK. 2 people died. Damage to the aircraft: destroyed.
- Date
- March 18, 2019
- Place
- Yukon, OK
- Aircraft
- Israel Aircraft Industries 1124 · Airplane
- Injuries
- 2 fatal, 0 serious, 0 minor
- Damage
- Destroyed
- Position
- 35.604°N, 97.706°W
- NTSB ID
- 20190318X82725
Official records · CEN19FA104
- Public docket: reports, statements and exhibits from the investigation
NTSB summary
HISTORY OF FLIGHTOn March 18, 2019, at 1531 central daylight time, an Israel Aircraft Industries (IAI) Westwind 1124 airplane, N4MH, was destroyed when it was involved in an accident near Yukon, Oklahoma. Both pilots sustained fatal injuries. The airplane was operated as a Title 14 Code of Federal Regulations Part 91 personal flight. A video surveillance camera at Sundance Airport (HSD), Yukon, Oklahoma, captured the airplane’s approach. Review of the video revealed that, as the airplane approached the approach end of the runway, it began to climb, rolled left, became inverted, and then impacted terrain. AIRCRAFT INFORMATIONThe airplane was not equipped with a nose landing gear (NLG) ground contact switch, which is intended to preclude the in-flight operation of the thrust reverser (T/R). IAI Service Letter WW-2419, dated September 30, 1977, “Thrust Reverser Arming Activation,” provided instructions for the removal of the NLG ground contact switch. The letter stated that compliance was at the “owner’s discretion.” AIRPORT INFORMATIONThe airplane was not equipped with a nose landing gear (NLG) ground contact switch, which is intended to preclude the in-flight operation of the thrust reverser (T/R). IAI Service Letter WW-2419, dated September 30, 1977, “Thrust Reverser Arming Activation,” provided instructions for the removal of the NLG ground contact switch. The letter stated that compliance was at the “owner’s discretion.” WRECKAGE AND IMPACT INFORMATIONThe airplane impacted terrain about 1,472 ft down, and 209 ft west of, runway 18. The nose and main landing gear were lock
Probable cause
The airplane’s unairworthy thrust reverser (T/R) system due to inadequate maintenance that resulted in an asymmetric T/R deployment during an approach to the airport and the subsequent loss of airplane control.
More accidents in OK
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Browse: Oklahoma
Source: NTSB aviation accident database (US government, public domain). Findings may be preliminary or later revised by the NTSB. Not a complete global record.
