# NTSB FTW90LA136: Cessna T210M, N351WB, Wharton, TX, July 7, 1990

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Limited investigation · Final report
- Date: July 7, 1990, 10:30 local (15:30 UTC)
- Place: Wharton, TX
- Coordinates: 29.31075, -96.090873 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=29.3107&lon=-96.0909&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 2 minor
- Status: Completed, report September 15, 1992
- Report: Approved by Office Director
- NTSB case key (mKey): 23155
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW90LA136
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/23155/pdf
- Page: https://openairdocs.org/ntsb/FTW90LA136

## Probable cause

THE LOSS OF POWER DUE TO AN OUT-OF-RIG CONDITION IN THE AUTOMATIC AUXILIARY BOOST PUMP MECHANISM.

## Sequence of events

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

- Loss of engine power(total) - nonmechanical, approach - vfr pattern - final approach
  - single engine aircraft
  - fuel system,electric boost pump - pressure excessive (cause)
  - maintenance,installation - improper, other maintenance personnel (cause)
  - checklist - not followed, pilot in command (contributing factor)
  - checklist - confusing, manufacturer
- Forced landing, descent - emergency
- In flight collision with terrain/water, landing - flare/touchdown
  - terrain condition - soft (contributing factor)
- Nose over, landing - flare/touchdown

## Analysis

THE PILOT STATED THAT HE TURNED THE AUX FUEL PUMP ON WHILE ON DOWNWIND, SWITCHED TO THE FULLEST TANK, AND THEN TURNED THE AUX FUEL PUMP OFF. HE ALSO STATED THAT AT 400 FEET ON FINAL HE PUT THE FLAPS DOWN, AND TRIED TO INCREASE POWER. HE RECEIVED NO ENGINE RESPONSE. AFTER EMERGENCY PROCEDURES FAILED HE MADE A FORCED LANDING, AND THE AIRPLANE NOSED OVER IN A MUDDY FIELD. INVESTIGATION REVEALED AN OUT-OF-RIG CONDITION ON THE THROTTLE RELATED SYSTEM THAT AUTOMATICALLY CONTROLLED THE TWO POSITION/PRESSURE AUX FUEL PUMP. ENGINE RUN BEFORE RE-RIGGING REVEALED AN OVER RICH MIXTURE AND ROUGH ENGINE AT IDLE; BEYOND 1/3 THROTTLE THE ENGINE WOULD NOT RUN. ENGINE RUN AFTER RE- RIGGING REVEALED NORMAL OPERATION. THE PILOT'S CHECKLIST STATES 'AUXILIARY FUEL PUMP - OFF,' THREE LINES AFTER STATING 'FUEL SELECTOR VALVE - FULLER TANK.'

## Aircraft

- Registration: [N351WB](https://openairdocs.org/deregistered/N351WB-1995-04-29), registration cancelled 1995-04-29, S/N 21062517 (OpenAirDocs)
- Reported make and model: CESSNA T210M
- Registry model: [Cessna T210M](https://openairdocs.org/model/cessna-t210m) (registry code 2073451) (OpenAirDocs)
- Category: Airplane
- Serial number: 21062517
- Airframe hours: 1748
- Engines: CONTINENTAL TSIO-520 310 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Kenneth G. Morris
- Registered owner: Wagner  And Brown
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, April 14, 1990, 25 hours before
- Departed: MDD, MIDLAND, TX
- Airport: 5R5, Municipal

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 44; flight instructor, airline transport, commercial; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; seat: left; flight hours: 11,330 total, 50 in this make and model, 9,500 as pilot in command, 69 in the last 90 days, 25 in the last 30 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 135° at 5 knots
- Visibility: 10 statute miles
- Temperature: 84 °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 19900707024429A](https://openairdocs.org/incident/19900707024429A), Jul 7, 1990: Cessna T210M, Wharton, TX, Substantial damage. Engine quit on final. Throttle bracket incorrect.

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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