# NTSB FTW90LA028: Beech 95-A55, N422K, Mineral Wells, TX, November 16, 1989

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: November 15, 1989, 18:35 local (Nov 16, 1989, 00:35 UTC)
- Place: Mineral Wells, TX
- Coordinates: 32.819423, -98.070495 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=32.8194&lon=-98.0705&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report May 15, 1992
- Report: Approved by Office Director
- NTSB case key (mKey): 23077
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW90LA028
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/23077/pdf
- Page: https://openairdocs.org/ntsb/FTW90LA028

## Probable cause

THE LANDING GEAR WAS EITHER NOT FULLY EXTENDED DURING THE LANDING OR IT RETRACTED DURING THE LANDING ROLL FOR AN UNDETERMINED REASON.

## Sequence of events

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

- Gear collapsed, landing - roll
  - reason for occurrence undetermined (cause)

## Analysis

THE INSTRUCTOR PILOT AND THE DUAL STUDENT STATED THAT THE NOSE GEAR AND THEN THE MAIN GEAR COLLAPSED AFTER THE AIRPLANE TOUCHED DOWN ON ITS GEAR, WITH THE GREEN (GEAR DOWN AND LOCKED) LIGHT ON. THERE WAS EVIDENCE THAT THE GEAR WAS UP AND LOCKED WHEN THE AIRPLANE TOUCHED DOWN ON THE RUNWAY. WHEN CHECKED, ONE OF THE LNDG GEAR CIRCUIT BREAKERS (FOR THE DYNAMIC BRAKE RELAY) WOULD 'POP.'  THE PURPOSE OF THE DYNAMIC BRAKE RELAY WAS TO KEEP THE LANDING GEAR MOTOR FROM OVERRUNNING & JAMMING IN THE UP OR DOWN POSITION. THE GEAR EXTENSION/RETRACTION SYSTEM (INCLUDING THE INDICATOR LIGHTS & WARNING HORN) OPERATED NORMALLY. ALSO, THE UP/DOWN LOCK POSIITON APPEARED TO BE CORRECT, NO PART FAILURE OR MALFUNCTION WAS FOUND THAT WOULD HAVE RESULTED IN THE ACDNT.

## Aircraft

- Registration: [N422K](https://openairdocs.org/deregistered/N422K-1992-03-23), registration cancelled 1992-03-23, S/N TC424 (OpenAirDocs)
- Reported make and model: BEECH 95-A55
- Registry model: [Beech 95-A55](https://openairdocs.org/model/beech-95-a55) (registry code 1152704) (OpenAirDocs)
- Category: Airplane
- Serial number: TC 424
- Engines: CONTINENTAL IO-470-L 260 horsepower reciprocating
- Damage: Substantial damage
- Flight: Instructional, Part 91
- Operator: Pegasus Flight Center Inc.
- Registered owner: Pegasus Flight Center, Inc
- Airworthiness certificate: Standard, Normal
- Departed: MWL
- Destination: MWL
- Airport: MWL, Mineral Wells Muni, runway 31, 5,094 × 100 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 27; commercial, flight instructor; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: right; flight hours: 1,920 total, 349 in this make and model, 1,813 as pilot in command, 232 in the last 90 days, 82 in the last 30 days, 3 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 320° at 5 knots
- Visibility: 20 statute miles
- Lowest ceiling: none
- Temperature: 54 °F, dew point 19 °F
- Altimeter: 30.00 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 19891115045429A](https://openairdocs.org/incident/19891115045429A), Nov 15, 1989: Beech 95A55, Mineral Wells, TX, Substantial damage. Aircraft landed gear up. Pilot and student claim otherwise. Circuit breaker may have popped.

## Other investigations on N422K (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 DEN68D0049](https://openairdocs.org/ntsb/DEN68D0049), Jul 12, 1967: Beech 95-A55 (N422K), Carlsbad, NM, 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.

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