# NTSB CHI91DCG02: Huff Pulsar, N89PB, Missouri City, MO, April 17, 1991

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Final report
- Date: April 17, 1991, 14:00 local (19:00 UTC)
- Place: Missouri City, MO
- Coordinates: 39.23954, -94.409721 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=39.2395&lon=-94.4097&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious
- Status: Completed, report March 31, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 14799
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI91DCG02
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/14799/pdf
- Page: https://openairdocs.org/ntsb/CHI91DCG02

## Probable cause

OIL FOULED SPARK PLUGS RESULTING IN A PARTIAL LOSS OF ENGINE POWER. SOFT TERRAIN IN THE FORCED LANDING AREA WAS A FACTOR.

## Sequence of events

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

- Loss of engine power(partial) - mech failure/malf, takeoff - initial climb
  - ignition system,spark plug - fouled (cause)
- In flight collision with terrain/water, emergency descent/landing
  - terrain condition - soft (contributing factor)

## Analysis

THE ACCIDENT AIRPLANE NOSED OVER DURING A FORCED LANDING ON SOFT TERRAIN FOLLOWING A PARTIAL LOSS OF ENGINE POWER DURING INITIAL CLIMB.  A POST ACCIDENT INSPECTION OF THE ENGINE SHOWED THE SPARK PLUGS HAD BEEN FOULED BY OIL.

## Aircraft

- Registration: [N89PB](https://openairdocs.org/deregistered/N89PB-1994-03-01), registration cancelled 1994-03-01, S/N 161 (OpenAirDocs)
- Reported make and model: HUFF PULSAR
- Registry model: [Huff Glenn E PULSAR](https://openairdocs.org/model/huff-glenn-e-pulsar) (registry code 05616J6) (OpenAirDocs)
- Category: Airplane, amateur-built
- Serial number: 161
- Airframe hours: 32
- Engines: ROTAX 582 66 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Glenn E. Huff
- Registered owner: Glenn E. Huff
- Airworthiness certificate: Special, Experimental (Special)
- Last inspection: Unknown, December 18, 1990, 6 hours before
- Departed: PVT, LIBERTY, MO

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 63; private; airplane ratings: single-engine land; medical: class 3, valid medical--w/ waivers/lim; seat: left; flight hours: 410.2 total, 31 in this make and model, 6.5 in the last 90 days, 1.7 in the last 30 days

## Weather

- Conditions: Visual (VMC), Day
- Visibility: 7 statute miles
- Lowest ceiling: 25,000 ft overcast
- Temperature: 68 °F
- Altimeter: 29.00 inHg
- Observed at: MCI, 10 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 (OpenAirDocs).

- [Accident 19910417011329A](https://openairdocs.org/incident/19910417011329A), Apr 17, 1991: Liberty, MO, Substantial damage. Engine quit on climbout. Crash landed. Engine fouled with excess oil. An oil injection system just installed.

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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