Accident: Hughes 369D
Feb 9, 2022 · Bel Air, MD
NTSB numberERA22LA117Event id20220210104620
- 0
- Fatalities
- 0
- Serious injuries
- 0
- Minor injuries
- 1
- Uninjured
Probable cause
A loss of engine power due to bearing failures in the turbine section resulting from a fatigue fracture of the oil supply line that fed oil to the Nos. 6 and 7 bearings. The oil line failure led to rapid deterioration of the bearings from oil starvation. Contributing to the power loss was the installation of a No. 8 stationary seal with an undersized outside diameter, which resulted in a reduction of support for the turbine section rotating components and resulted in high vibration loads in the engine, which ultimately caused the oil supply line to fatigue and fail. Also contributing was the improper or inadequate inspections of the No. 8 stationary seal by maintenance personnel.
Source: National Transportation Safety Board. Record last changed Oct 28, 2026, 10:54 UTC.
Aircraft involved
- Aircraft
- Hughes 369D
- Registration
- N9159F
- Year built
- 1979
- Category
- Helicopter
- Damage
- Substantial
- Operating rules
- Part 91: general aviation
- Defining event
- Enroute-cruise Loss of engine power (partial)
Source: National Transportation Safety Board aviation accident database. Counts only; Voydar holds no names.
Nearest airports
Airports with a Voydar profile closest to the recorded position. Proximity only.
- Weide (Aberdeen Proving Ground) Army Heliport (KEDG)9 nm (17 km) south
- Phillips Army Air Field (APG)9 nm (17 km) south-east
- Martin State Airport (MTN)13 nm (24 km) south
This page restates the NTSB's public record. Injury figures are counts; Voydar does not hold or publish the names of anyone involved.