- Date
- September 2, 1987, 15:25 local (19:25 UTC)
- Place
- St Thomas
- Injuries
- 7 uninjured
- Damage
- Substantial damage
- Phase of flight
- Approach
- Aircraft
- N111UAAero Commander 680FL
- Weather
- Visual (VMC) · Day
- Status
- Completed · report January 11, 1989
- Report
- Approved by Office Director
- FAA report
- 19870902083269A
- Case key
- 31958
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
Sequence of events
NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.
Analysis
After a loss of hyd pressure, the rgt main gear would not fully extd when the plt tried to lower the gear for lndg. All atmts to lock it into place were unsuccessful. When the acft touched down drg the lndg, the rgt main gear collapsed. The acft slid to a stop & the occupants were evacuated. An inspn of the rgt main gear assy revealed the hyd actuating cyl had failed at the snap ring groove & the pneumatic actuating cyl had failed at the rod end. Both failed fm overload. This was the 2nd overload failure of the hyd actuating cyl in 26 flt hrs of opn. According to a mechanic, who was familiar with the acft, this failure was consistent with excessive pressure in the sys due to a pressure relief/unloadervalve malfunction.
Aircraft
- Registration
- N111UA
- Reported as
- Aero Commander 680FL
- Category
- Airplane
- Serial number
- 1370-43
- Airframe hours
- 9,769
- Engine
- Lycoming IO-720-B1B, 400 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Part 135
- Registered owner
- Clint Aero, Inc.
- Airworthiness certificate
- Standard, Normal
- Last inspection
- Annual · May 31, 1987 · 73 hours before
- Departed
- MKPD · Dominica,Uk, OF
- Flight plan
- VFR
- Airport
- STT · Cyril E. King, runway 9, 5,358 × 150 ft, asphalt
Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.
Flight crew
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 43
- Certificates
- Commercial, Airline transport
- Airplane ratings
- Single-engine land, Multi-engine land
- Instrument ratings
- Airplane
- Medical
- Class 1, Valid Medical--no waivers/lim.
- Seat
- Left
- Flight hours
- 2,986 in this make and model · 89 in the last 90 days · 3 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 60° at 10 knots
- Visibility
- 30 statute miles
- Lowest ceiling
- None
- Temperature
- 84 °F, dew point 77 °F
- Altimeter
- 29.00 inHg
- Observed at
- STT
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.