# NTSB ANC83LA128: Piper PA-11, N4523M, Kasilof, AK, June 25, 1983

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Limited investigation · Final report
- Date: June 24, 1983, 19:15 local (Jun 25, 1983, 03:15 UTC)
- Place: Kasilof, AK
- Coordinates: 60.280021, -151.259841 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=60.2800&lon=-151.2598&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 4145
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC83LA128
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/4145/pdf
- Page: https://openairdocs.org/ntsb/ANC83LA128

## Sequence of events

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

- In flight collision with object, takeoff - initial climb
  - object - tree(s) (contributing factor)
  - carburetor heat - improper use of, pilot in command (cause)
  - lack of total experience in type of aircraft, pilot in command (cause)
  - flight controls - improper use of, pilot in command (cause)
  - judgment - poor, pilot in command (cause)
  - aborted takeoff - not performed, pilot in command (cause)
- In flight collision with terrain/water, takeoff - initial climb

## Analysis

THE ACFT COLLIDED WITH TREES AND CRASHED DURING TAKEOFF. THE PLT STATED HE MADE SEVERAL ATTEMPTS TO GET AIRBORNE IN BOTHDIRECTIONS FROM THE STRIP AND WHEN HE FINALLY GOT AIRBORNE HE STRUCK A TREE AND CRASHED. THE PLT STATEMENTS VARIED DURING SEVERAL INTERVIEWS REGARDING THE ENG PERFORMANCE OF THE AIRCRAFT AND ALLUDED TO A DEFECTIVE OR WORN CAMSHAFT. HOWEVER, DURING A SUBSEQUENT TELEPHONE INTERVIEW THE PLT STATED THAT HE MAY HAVE INADVERTANTLY LEFT THE CARBURETOR HEAT ON WHILE ATTEMPTING HIS TAKEOFF.

## Aircraft

- Registration: [N4523M](https://openairdocs.org/deregistered/N4523M-2013-09-19), registration cancelled 2013-09-19, S/N 11-27, built 1947 (OpenAirDocs)
- Reported make and model: PIPER PA-11
- Registry model: [Piper PA-11](https://openairdocs.org/model/piper-pa-11) (registry code 7101102) (OpenAirDocs)
- Registry engine: [Continental C90 series](https://openairdocs.org/engine/continental-c90-series) (registry code 17009, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 11-27
- Airframe hours: 1955
- Engines: CONTINENTAL C90-12F 90 horsepower reciprocating
- Damage: Substantial damage
- Flight: Instructional, Part 91
- Operator: Craig Rooke
- Registered owner: Universal Life Church
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, March 19, 1983, 15 hours before
- Airport: Johnson Lake

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 35; student; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim.; seat: front; flight hours: 67 total, 14 in this make and model, 24 as pilot in command, 67 in the last 90 days

## Weather

- Conditions: Visual (VMC), Day
- 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 19830624070259A](https://openairdocs.org/incident/19830624070259A), Jun 24, 1983: Piper PA11, Kasilof, AK, Substantial damage. Report indicates pilot attempted takeoff with carb heat on. Became airborne on third attempt and struck trees.

## Other investigations on N4523M (1)

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.

- [NTSB ANC85LA045](https://openairdocs.org/ntsb/ANC85LA045), Feb 8, 1985: Piper PA-11 (N4523M), Soldotna, AK, substantial damage

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.