# NTSB MKC84LA135: Gulfstream American AA5A, N26320, Pleasant Hill, MO, May 9, 1984

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Limited investigation · Final report
- Date: May 9, 1984, 11:46 local (16:46 UTC)
- Place: Pleasant Hill, MO
- Coordinates: 38.79018, -94.259521 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=38.7902&lon=-94.2595&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 33677
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC84LA135
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/33677/pdf
- Page: https://openairdocs.org/ntsb/MKC84LA135

## 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
  - engine assembly,valve,intake - failure,total (cause)
  - engine assembly,valve,intake - fatigue (cause)
- Forced landing, descent - emergency
- Nose over, landing - flare/touchdown

## Analysis

THE ACFT NOSED OVER DURING A FORCED LANDING AFTER THE ENGINE FAILED. INVESTIGATION REVEALED AN EXHAUST VALVE HAD FAILED AND IMBEDDED ITSELF IN A SPARK PLUG HOLE. IT WAS DETERMINED THAT THIS WAS A FATIGUE FAILURE.

## Aircraft

- Registration: N26320 (not matched to a registry record)
- Reported make and model: GULFSTREAM AMERICAN AA5A
- Category: Airplane
- Serial number: 533
- Airframe hours: 1067
- Engines: LYCOMING O-320-E2G 180 horsepower reciprocating
- Damage: Substantial damage
- Flight: Business, Part 91
- Registered owner: Ross And Associates
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, August 29, 1983, 36 hours before
- Departed: H20, CARTHAGE, MO
- Destination: 31P, INDEPENDENCE, MO

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 42; private; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim.; seat: left; flight hours: 1,258 total, 1,085 in this make and model, 1,258 as pilot in command, 38 in the last 90 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 330° at 8 knots
- Visibility: 15 statute miles
- Lowest ceiling: none
- Temperature: 61 °F

## 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 19840509016549A](https://openairdocs.org/incident/19840509016549A), May 9, 1984: Gulstm AA5A, Pleasant Hill, MO, Substantial damage. Crash occurred during emergency landing after exhaust valve failed.

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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