- Date
- September 2, 1987, 12:15 local (17:15 UTC)
- Place
- Appleton, WI
- Injuries
- 5 uninjured
- Damage
- Substantial damage
- Phase of flight
- Enroute
- Aircraft
- N9168NAero Commander 690
- Weather
- Visual (VMC) · Day
- Status
- Completed · report October 25, 1988
- Report
- Approved by Office Director
- FAA report
- 19870902054399A
- Case key
- 13815
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
The plt rprtd that after the acft was at cruise flt, there was a rapid loss of hydraulic pressure. He returned to the dep arpt, but was unable to get the left main gear to lock down. Subsequently, the left main gear collapsed when the acft was landed. An investigation revealed a hydraulic line in the left wing had failed which had allowed a loss of hydraulic fluid & pressure. Also, there was a sticking priority valve. With these problems, the gear could not be extended with either the normal or emerg sys.
Aircraft
- Registration
- N9168N
- Reported as
- Aero Commander 690
- Category
- Airplane
- Serial number
- 11068
- Airframe hours
- 5,632
- Engine
- Airesearch TPE-331, 718 horsepower, turbo prop
- Damage
- Substantial damage
- Flight
- Part 135
- Operator
- Maxair
- Registered owner
- Maxair, Inc.
- Airworthiness certificate
- Standard, Normal
- Last inspection
- Continuous airworthiness · August 25, 1987
- Departed
- ATW
- Destination
- STL · St. Louis, MO
- Flight plan
- IFR
- Airport
- ATW · Outagamie County, runway 3, 7,001 × 150 ft, concrete
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
- 45
- Certificate
- Airline transport
- Airplane ratings
- Single-engine sea, Multi-engine land, Single-engine land
- Instrument ratings
- Airplane
- Medical
- Class 2, Valid Medical--no waivers/lim.
- Seat
- Left
- Flight hours
- 10,000 total · 2,405 in this make and model · 105 in the last 90 days · 4 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 330° at 6 knots
- Visibility
- 20 statute miles
- Lowest ceiling
- None
- Temperature
- 63 °F, dew point -0 °F
- Altimeter
- 30.00 inHg
- Observed at
- ATW, 5 nm away
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.