# NTSB ANC84FA131: Piper PA-22, N5793D, Delta Junction, AK, August 7, 1984

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Field investigation · Final report
- Date: August 6, 1984, 19:45 local (Aug 7, 1984, 03:45 UTC)
- Place: Delta Junction, AK
- Coordinates: 63.699779, -144.890411 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=63.6998&lon=-144.8904&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 4221
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC84FA131
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/4221/pdf
- Page: https://openairdocs.org/ntsb/ANC84FA131

## 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 - separation (cause)
  - maintenance,inspection - not performed, pilot in command (cause)
  - engine assembly,piston - penetrated (cause)
  - maintenance,major repair - not performed, pilot in command (cause)
  - procedures/directives - not followed, pilot in command (cause)
- In flight collision with object, descent - emergency
  - object - tree(s) (contributing factor)

## Analysis

THE ACFT WAS DAMAGED IN AN OFF ARPT LANDING AFTER THE ENGINE LOST POWER. THE PLT STATED THE ACFT WAS OPERATING ON AUTOMOTIVE FUEL WITHOUT THE REQUIRED SUPPLEMENTAL TYPE CERTIFICATE. THE ACFT WAS OPERATING WITHOUT THE REQUIRED ANNUAL INSPECTION AND THE TBO HAD BEEN EXCEEDED BY OVER 19 PERCENT. POST ACCIDENT EXAMINATION SHOWED THAT THE #3 EXHAUST VALVE HAD BROKEN OFF AND BROKEN OUT A PART OF THE TOP OF THE PISTON.

## Aircraft

- Registration: [N5793D](https://openairdocs.org/deregistered/N5793D-2012-08-27), registration cancelled 2012-08-27, S/N 22-4469 (OpenAirDocs)
- Reported make and model: PIPER PA-22
- Registry model: [Piper PA-22-150](https://openairdocs.org/model/piper-pa-22-150) (registry code 7102210) (OpenAirDocs)
- Category: Airplane
- Serial number: 22-4469
- Airframe hours: 2388
- Engines: LYCOMING O-320 150 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Donald Earl Evans
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, July 27, 1983
- Departed: 25AK, DELTA JUNCTION, AK

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 44; student; airplane ratings: single-engine land; medical: class 3, valid medical--w/ waivers/lim; seat: left; flight hours: 65 total, 65 in this make and model, 42 as pilot in command, 10 in the last 90 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Not reported
- Lowest ceiling: none

## 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 19840806040629A](https://openairdocs.org/incident/19840806040629A), Aug 6, 1984: Piper PA22150, Delta Junction, AK, Substantial damage. Engine quit on takeoff. Struck trees. Engine had broken valves and piston. Overhaul overdue. Plane out of annual.

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.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.