# NTSB ATL92LA182: Piper PA-22, N8005C, Jasper, TN, September 15, 1992

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Limited investigation · Final report
- Date: September 15, 1992, 17:45 local (22:45 UTC)
- Place: Jasper, TN
- Coordinates: 35.049476, -85.620658 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=35.0495&lon=-85.6207&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 2 minor
- Status: Completed, report July 29, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 8665
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ATL92LA182
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/8665/pdf
- Page: https://openairdocs.org/ntsb/ATL92LA182

## Probable cause

THE FRACTURED VALVE WHICH RESULTED IN A TOTAL LOSS OF ENGINE POWER, WHILE FLYING OVER TERRAIN THAT WAS NOT SUITABLE FOR A FORCED LANDING. A FACTOR WAS THE DENSELY WOODED, MOUNTAINOUS TERRAIN.

## 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,exhaust - fractured (cause)
- Forced landing, descent - emergency
  - terrain condition - mountainous/hilly (contributing factor)
  - terrain condition - none suitable (cause)
- In flight collision with object, descent - emergency
  - object - tree(s) (contributing factor)

## Analysis

DURING CRUISE FLIGHT THE PILOT HEARD A BANG, FOLLOWED BY A LOSS OF ENGINE POWER. THE AIRPLANE WAS BEING FLOWN OVER DENSELY WOODED, MOUNTAINOUS TERRAIN. A FORCED LANDING WAS MADE TO A LOGGED CLEARING, WHICH RESULTED IN A NOSE OVER WHEN THE NOSE WHEEL CONTACTED A CUT LOG. A SUBSEQUENT EXAMINATION OF THE ENGINE REVEALED THAT THE NUMBER 2 CYLINDER EXHAUST VALVE HAD BECOME STUCK IN THE OPEN POSITION. THE CYLINDER & PISTON EXHIBITED EXTREME IMPACT DAMAGE FROM THE FRACTURED VALVE.

## Aircraft

- Registration: [N8005C](https://openairdocs.org/deregistered/N8005C-1993-05-27), registration cancelled 1993-05-27, S/N 222194 (OpenAirDocs)
- Reported make and model: PIPER PA-22
- Registry model: [Piper PA-22-135](https://openairdocs.org/model/piper-pa-22-135) (registry code 7102206) (OpenAirDocs)
- Category: Airplane
- Serial number: 22-2194
- Airframe hours: 2113
- Engines: LYCOMING O-290-D2 135 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Graham, Robert L.
- Registered owner: Graham, Kimberly E.
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, September 6, 1991, 34 hours before
- Departed: APT
- Destination: APT

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 54; private; airplane ratings: single-engine land; medical: class 2, valid medical--w/ waivers/lim; seat: left; flight hours: 1,000 total, 500 in this make and model, 1,000 as pilot in command

## Weather

- Conditions: Visual (VMC), Day
- Wind: 350° at 3 knots
- Visibility: 6 statute miles
- Lowest ceiling: none
- Temperature: 70 °F, dew point 66 °F
- Altimeter: 30.00 inHg
- Observed at: CHA, 30 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 19920915036699A](https://openairdocs.org/incident/19920915036699A), Sep 15, 1992: Piper PA22135, Jasper, TN, Substantial damage. Lost power over wooded area. Struck a log on forced landing. NR2 cylilnder exhaust valve stuck open and broke off.

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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