# NTSB FTW92LA066: Cessna 172RG, N9754B, Waco, TX, February 4, 1992

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: February 3, 1992, 20:40 local (Feb 4, 1992, 02:40 UTC)
- Place: Waco, TX
- Coordinates: 31.56005, -97.179771 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=31.5601&lon=-97.1798&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report June 11, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 18441
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW92LA066
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/18441/pdf
- Page: https://openairdocs.org/ntsb/FTW92LA066

## Probable cause

THE PILOT'S FAILURE TO FULLY EXTEND THE LANDING GEAR BY THE ALTERNATE GEAR EXTENTION SYSTEM. FACTORS WERE THE DARK NIGHT, LOW CEILING, FOG, DRIZZLE AND FAILURE OF THE ELECTRICAL SYSTEM.

## Sequence of events

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

- Airframe/component/system failure/malfunction, approach - faf/outer marker to threshold (ifr)
  - electrical system,alternator - shorted (contributing factor)
  - light condition - dark night (contributing factor)
  - weather condition - fog (contributing factor)
  - weather condition - drizzle/mist (contributing factor)
  - weather condition - low ceiling (contributing factor)
- Main gear collapsed, landing - flare/touchdown
  - emergency procedure - inadequate, pilot in command (cause)
  - gear down and locked - not attained, pilot in command (cause)

## Analysis

THE AIRPLANE'S ELECTRICAL SYSTEM FAILED DURING THE INSTRUMENT APPROACH TO THE AIRPORT. THE WEATHER WAS INSTRUMENT METEOROLOGICAL CONDITIONS WITH LOW CEILINGS, DRIZZLE, AND FOG. THE PILOT LOWERED THE LANDING GEAR WHICH DID NOT FULLY EXTEND. THE GEAR COLLAPSED UPON TOUCHDOWN ON THE RUNWAY. THE FAA REPORTED FINDING A ELECTRICALLY SHORTED ALTERNATOR.

## Aircraft

- Registration: N9754B (not matched to a registry record)
- Reported make and model: CESSNA 172RG
- Category: Airplane
- Serial number: 172RG1013
- Engines: LYCOMING O-360-F1A6 180 horsepower reciprocating
- Damage: Substantial damage
- Flight: Business, Part 91
- Operator: Stimson, Clinton S.
- Registered owner: Texas Aero, Inc.
- Airworthiness certificate: Standard, Normal
- Last inspection: Unknown, January 2, 2000
- Departed: DAL, DALLAS, TX
- Flight plan: IFR
- Airport: ACT, Waco Regional, runway 19, 6,597 × 150 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 24; commercial; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: left; flight hours: 1,050 total, 50 in this make and model, 1,050 as pilot in command, 1 in the last 24 hours

## Weather

- Conditions: Instrument (IMC), Night/dark
- Wind: 70° at 13 knots
- Visibility: 4 statute miles
- Lowest ceiling: 700 ft overcast
- Temperature: 55 °F, dew point 54 °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 19920203003269A](https://openairdocs.org/incident/19920203003269A), Feb 3, 1992: Cessna 172RG, Waco, TX, Substantial damage. Lost electronics on approach and all electric power. Gear was down but not locked. Collapsed. Alternator shorted.

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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