# NTSB DEN84LA132: Piper PA-12, N2577M, Jackson, WY, April 20, 1984

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: April 20, 1984, 13:46 local (20:46 UTC)
- Place: Jackson, WY
- Coordinates: 43.470561, -110.75946 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=43.4706&lon=-110.7595&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 16367
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN84LA132
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/16367/pdf
- Page: https://openairdocs.org/ntsb/DEN84LA132

## Sequence of events

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

- In flight encounter with weather, takeoff - initial climb
  - weather condition - unfavorable wind (contributing factor)
  - flight controls - improper use of, pilot in command (cause)
  - lack of familiarity with aircraft, pilot in command (cause)
  - weather condition - crosswind (contributing factor)
  - lowering of flaps - improper, pilot in command (cause)
  - weather evaluation - inaccurate, pilot in command (cause)
  - preflight briefing service - disregarded, pilot in command (cause)
- In flight collision with terrain/water, takeoff - initial climb
  - stall - not corrected, pilot in command (cause)
- Nose over, takeoff - initial climb

## Analysis

THE ACFT CRASHED DURING TAKEOFF FROM JACKSON AIRPORT. INVESTIGATION REVEALED THAT THE PLT AND CFI WERE IN THE PROCESS OF FERRYING THE ACFT TO WASHINGTON STATE. THE PLT STATED THAT DURING TAXI THE AIRPORT UNICOM REPORTED THE WIND TO BE FROM THE NORTHEAST AT 18 TO 20 KTS. AFTER THE ACCIDENT, THE PLT STATED HE TALKED TO A GENTLEMEN THAT WAS LOOKING AT THE UNICOM WIND INDICATOR WHEN THE TAKEOFF WAS IN PROCESS AND THE GENTLEMEN TOLD HIM THE WIND INDICATOR SHOWED THE WIND TO BE FROM 090 DEGREES AT 31 KTS.

## Aircraft

- Registration: [N2577M](https://openairdocs.org/aircraft/N2577M), registered now, S/N 12-1051, built 1946 (OpenAirDocs)
- Reported make and model: PIPER PA-12
- Registry model: [Piper PA-12](https://openairdocs.org/model/piper-pa-12) (registry code 7101202) (OpenAirDocs)
- Registry engine: [Lycoming 0-320 series](https://openairdocs.org/engine/lycoming-0-320-series) (registry code 41508, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 12-1051
- Airframe hours: 5167
- Engines: LYCOMING O-320 150 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Bret Mcdonald
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, July 26, 1983, 41 hours before
- Destination: BOISE, ID
- Flight plan: VFR
- Airport: JAC, Jackson, runway 36, 6,300 × 150 ft, dirt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 36; private; airplane ratings: single-engine land; medical: class 2, valid medical--no waivers/lim.; seat: front; flight hours: 89 total, 14 in this make and model, 51 as pilot in command, 47 in the last 90 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 90° at 31 knots
- Visibility: 20 statute miles
- Lowest ceiling: 6,000 ft overcast
- Temperature: 45 °F, dew point 27 °F
- Altimeter: 29.00 inHg

## 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 19840420013939A](https://openairdocs.org/incident/19840420013939A), Apr 20, 1984: Piper PA12, Jackson, WY, Substantial damage. Lost directional control after liftoff in a severe crosswind and crashed. Crosswind exceeded aircrafts control.

## Other investigations on N2577M (2)

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 ANC92LA172](https://openairdocs.org/ntsb/ANC92LA172), Sep 14, 1992: Piper PA-12-150 (N2577M), Upper Yantarni, AK, substantial damage. Probable cause: PILOT IN COMMAND INADVERTANT ENCOUNTER WITH AERODYNAMIC STALL DURING LOW LEVEL APPROACH TURN. FACTOR AFFECTING THE ACCIDENT WAS: THE PILOT'S APPROACH PROCEDURE/TECHNIQUE TO FLY VFR APPROACH PATTERN…
- [NTSB SEA68D0243](https://openairdocs.org/ntsb/SEA68D0243), Feb 6, 1968: Piper PA-12 (N2577M), Mccall, ID, 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.