# NTSB FTW84LA182: Martin AM-1 (Mauler), N5586A, Lubbock, TX, March 31, 1984

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: March 31, 1984, 14:00 local (20:00 UTC)
- Place: Lubbock, TX
- Coordinates: 33.529476, -101.790267 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=33.5295&lon=-101.7903&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 21295
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW84LA182
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/21295/pdf
- Page: https://openairdocs.org/ntsb/FTW84LA182

## Sequence of events

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

- Loss of control - on ground/water, takeoff - roll/run
  - directional control - not maintained, pilot in command (cause)
  - lack of total experience in type of aircraft, pilot in command (cause)
  - ground loop/swerve - not corrected, pilot in command (cause)
  - aborted takeoff - performed, pilot in command
- On ground/water collision with object, takeoff
  - object - fence (contributing factor)
  - object - animal(s) (contributing factor)

## Analysis

THE PLT WAS MAKING A TAKEOFF IN THIS LARGE SINGLE ENGINE SINGLE SEAT ACFT AFTER ONLY 1 HOUR OF EXPERIENCE. THE PLT SAID THAT THE ENGINE OR PROPELLER MALFUNCTIONED. THE ACFT VEERED OFF THE SIDE OF THE RWY THROUGH A FENCE AND STRUCK 4 HORSES. AN FAA INSPECTOR COULD FIND NO EVIDENCE OF A PROP OR ENGINE MALFUNCTION. THIS 4000 HP R-4360 ENGINE CREATES A CONSIDERABLE AMOUNT OF TORQUE AT FULL THROTTLE WHICH REQUIRES PLT INPUT TO MAINTAIN DIRECTIONAL CONTROL.

## Aircraft

- Registration: [N5586A](https://openairdocs.org/deregistered/N5586A-2009-03-09), registration cancelled 2009-03-09, S/N 13920 (OpenAirDocs)
- Reported make and model: Martin Company AM-1 (MAULER) (AM-1 (MAUL)
- Registry model: [Martin-Confederate Air Force AM-1 MAULER](https://openairdocs.org/model/martin-confederate-air-force-am-1-mauler) (registry code 5451001) (OpenAirDocs)
- Category: Airplane
- Serial number: 13920
- Airframe hours: 104
- Engines: P&W R-4360 4000 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Confederate Air Force Inc
- Airworthiness certificate: Special, Experimental (Special)
- Last inspection: 100 hour, February 25, 1984, 1 hours before
- Airport: F82, Town And Country, runway 35, 2,600 × 40 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 45; private; airplane ratings: multi-engine land, single-engine land; medical: class 3, valid medical--w/ waivers/lim; seat: front; flight hours: 3,498 total, 1 in this make and model, 3,481 as pilot in command, 12 in the last 90 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 350° at 5 knots
- Visibility: 20 statute miles
- 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 19840331008249A](https://openairdocs.org/incident/19840331008249A), Mar 31, 1984: Martin AM1, Lubbock, TX, Substantial damage. Lost control on liftoff due to heavy engine torque. Aborted. Ran off runway striking 4 horses and a fence.

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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