# NTSB DEN85LA248: Piper PA-18, N7467D, Deming, NM, September 24, 1985

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Limited investigation · Final report
- Date: September 23, 1985, 18:22 local (Sep 24, 1985, 00:22 UTC)
- Place: Deming, NM
- Coordinates: 32.259674, -107.750068 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=32.2597&lon=-107.7501&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious, 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 16767
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN85LA248
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/16767/pdf
- Page: https://openairdocs.org/ntsb/DEN85LA248

## Sequence of events

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

- Loss of engine power(total) - nonmechanical, takeoff - roll/run
  - touch-and-go - attempted, pilot in command (cause)
  - engine assembly - failure,total (cause)
  - mixture - improper use of, pilot in command (cause)
  - throttle/power control - excessive, pilot in command (cause)
- On ground/water collision with object, takeoff - roll/run
  - object - tree(s)
  - ground loop/swerve - intentional, pilot in command (cause)

## Analysis

WHILE PRACTICING TOUCH AND GO LANDINGS THE PLT ADDED PWR FOR TAKEOFF AND THE ENG QUIT. THE PLT VEERED THE ACFT TO THE LEFT TO AVOID HITTING FARM MACHINERY AND COLLIDED WITH A TREE STUMP. POST ACCIDENT EXAM OF THE ENG REVEALED THE ENG MOSTLIKELY FAILED AS A RESULT OF TOO RICH OF A MIXTURE AND RAPID THROTTLE APPLICATION.

## Aircraft

- Registration: [N7467D](https://openairdocs.org/deregistered/N7467D-2013-05-08), registration cancelled 2013-05-08, S/N 18-5796, built 1957 (OpenAirDocs)
- Reported make and model: PIPER PA-18
- Registry model: [Piper PA-18](https://openairdocs.org/model/piper-pa-18) (registry code 7101802) (OpenAirDocs)
- Registry engine: [Lycoming 0-320 series](https://openairdocs.org/engine/lycoming-0-320-series) (registry code 41508, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 18-5796
- Airframe hours: 2991
- Engines: LYCOMING O-320-A2A 150 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Mr. Lee Thomas
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, March 21, 1985, 42 hours before
- Airport: NN26, Luna

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 61; airline transport, flight instructor, commercial; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; seat: center; flight hours: 22,000 total, 1,500 in this make and model

## Weather

- Conditions: Visual (VMC), Day
- Visibility: 50 statute miles
- Lowest ceiling: none
- Temperature: 81 °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 19850923046999A](https://openairdocs.org/incident/19850923046999A), Sep 23, 1985: Piper PA18, Deming, NM, Substantial damage. Engine quit on too rapid throttle advance, rich mixture, high density altitude. Veered off runway side, hit a tree.

## Other investigations on N7467D (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 FTW96LA379](https://openairdocs.org/ntsb/FTW96LA379), Sep 8, 1996: Piper PA-18 (N7467D), Palestine, TX, substantial damage. Probable cause: The pilot's selection of unsuitable terrain for takeoff.

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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