# NTSB MKC88FA147: Mooney M20C, N6528U, Missouri City, MO, August 3, 1988

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Field investigation · Final report
- Date: August 3, 1988, 07:58 local (12:58 UTC)
- Place: Missouri City, MO
- Coordinates: 39.239994, -94.289375 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=39.2400&lon=-94.2894&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 2 fatal
- Status: Completed, report December 29, 1989
- Report: Approved by Office Director
- NTSB case key (mKey): 34499
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC88FA147
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/34499/pdf
- Page: https://openairdocs.org/ntsb/MKC88FA147

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- Loss of engine power(total) - mech failure/malf, cruise - normal
  - operation with known deficiencies in equipment - attempted, pilot in command (cause)
  - fuel system,pump - failure,total (contributing factor)
  - emergency procedure - improper, pilot in command (cause)
  - fuel system,electric boost pump - not engaged (cause)
- Forced landing, descent - emergency
- Loss of control - in flight, descent - emergency
  - airspeed - not maintained, pilot in command (cause)
  - stall - inadvertent, pilot in command (cause)
- In flight collision with object, descent - uncontrolled
  - object - building(nonresidential)

## Analysis

THE CO-OWNER OF THE ACFT STATED HE HAD EXPERIENCED A FUEL FLOW PBLM WHILE FLYING TO THE (OJC) ARPT, WHERE PAX (ONE OF THEM WAS A CO-OWNER) WERE TO BOARD. HE STATED HE ADVZD THE OTHER OWNER OF THE PBLM, BUT NO CORRECTIVE ACTION WAS TAKEN. THE ACFT WAS THEN TAXIED TO THE TAKEOFF AREA IN ORDER TO MAKE A FINAL CHK OF THE ACFT SYSTEMS. THE CO-OWNER STATED THAT HE FELT UNEASY ABT THE RESULTS OF THE ENG RUN-UP AND DECLINED TO CONTINUE. AFTR DEPLANING, AND DESPITE THE VERBAL CAUTION, THE OTHER OWNER TAXIED BACK TO THE ACTIVE RWY TO DEPART. THE ACFT WAS LATER OBSRVD BY WITNESSES LOCATED 72 MI FM THE DEPARTURE ARPT DSCNDG IN A STEEP DIVE. THE ACFT CRASHED INTO A RESIDENTIAL GARAGE NEAR MISSOURI CITY, MO. POST ACCIDENT INSP REVEALED A MALFUNCTIONING ENG DRIVEN FUEL PUMP, AND A NON-ACTIVATED ELEC FUEL BOOST PUMP. THE INSP DETERMINED THAT THE ELEC FUEL BOOST PUMP WAS FUNCTIONAL AND CAPABLE OF SUPPLYING FUEL TO THE ENG.

## Aircraft

- Registration: [N6528U](https://openairdocs.org/deregistered/N6528U-2014-11-12), registration cancelled 2014-11-12, S/N 2311, built 1962 (OpenAirDocs)
- Reported make and model: MOONEY M20C
- Registry model: [Mooney M20C](https://openairdocs.org/model/mooney-m20c) (registry code 5870208) (OpenAirDocs)
- Registry engine: [Lycoming O&VO-360 series](https://openairdocs.org/engine/lycoming-o-vo-360-series) (registry code 41514, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 2311
- Airframe hours: 3954
- Engines: LYCOMING O-360-A1D 180 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: N6528u Inc.
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, July 26, 1988, 13 hours before
- Departed: OJC, OLATHE, KS
- Destination: OSH, OSHKOSH, WI

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 62; private; airplane ratings: single-engine land; medical: class 3, valid medical--w/ waivers/lim; seat: left; toxicology performed; flight hours: 537 total, 470 as pilot in command, 9 in the last 90 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 210° at 15 knots
- Visibility: 20 statute miles
- Lowest ceiling: none
- Temperature: 81 °F
- Altimeter: 30.00 inHg

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19880803029949A](https://openairdocs.org/incident/19880803029949A), Aug 3, 1988: Mooney M20C, Missouri City, KS, Substantial damage, 2 fatal. Fuel pump malfunction. Damage indicates aircraft stalled and descended into a garage roof.

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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