Incident: Boeing 737 7H4
Jun 3, 2017 · Washington, DC
NTSB numberENG17IA027Event id20170608X90705
- 0
- Fatalities
- 0
- Serious injuries
- 0
- Minor injuries
- 67
- Uninjured
Probable cause
The failure the control alternator gearshaft, which disconnected the accessory gearbox from the rest of the engine and resulted in an uncommanded in-flight shutdown of the left engine and subsequent flight diversion. The control alternator gearshaft failed because of high cycle fatigue intergranular corrosion cracking. Contributing to the failure of the control alternator gearshaft were additional manufacturing processing steps to address part non-conformances that reduced its high cycle fatigue capability and potential change in vibratory environment since the last shop visit.
Source: National Transportation Safety Board. Record last changed Oct 28, 2026, 10:54 UTC.
Aircraft involved
- Aircraft
- Boeing 737 7H4
- Registration
- N765SW
- Year built
- 2000
- Category
- Airplane
- Damage
- Minor
- Operating rules
- Part 121: air carrier
- Defining event
- Enroute Uncontained engine failure
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.
- Washington Dulles International Airport (IAD)0 nm (1 km) south-west
- Washington Manassas Harry P. Davis Field (MNZ)14 nm (26 km) south
- Montgomery County Airpark (GAI)19 nm (35 km) north-east
This page restates the NTSB's public record. Injury figures are counts; Voydar does not hold or publish the names of anyone involved.