# NTSB FTW90LA014: Cessna T-337G-P, N21GC, Laredo, TX, October 22, 1989

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: October 21, 1989, 21:38 local (Oct 22, 1989, 02:38 UTC)
- Place: Laredo, TX
- Location: 27.6163° N, 99.4545° W: Placed by OpenAirDocs from NTSB’s distance and direction from LAREDO INTL (LRD), within about a mile (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=27.6163&lon=-99.4545&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 4 uninjured
- Status: Completed, report June 25, 1992
- Report: Approved by Office Director
- NTSB case key (mKey): 23066
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW90LA014
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/23066/pdf
- Page: https://openairdocs.org/ntsb/FTW90LA014

## Probable cause

DOUBLE ENGINE FAILURE DUE TO FUEL EXHAUSTION. THE FUEL EXHAUSTION WAS CAUSED BY INCORRECT INFLIGHT FUEL CONSUMPTION CALCULATIONS AND ONE INACCURATE FUEL QUANITY GAUGE. CONTRIBUTING TO THE ACCIDENT WAS THE DARK NIGHT RESTRICTION TO VISIBILITY.

## Sequence of events

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

- Loss of engine power(total) - nonmechanical, descent - normal
  - all engines
  - fuel consumption calculations - inadequate, pilot in command (cause)
  - fluid,fuel - exhaustion (cause)
  - fuel system,fuel quantity float/sensor - incorrect (contributing factor)
- Forced landing, descent - emergency
- In flight collision with object, approach - vfr pattern - base leg/base to final
  - light condition - dark night (contributing factor)
  - object - wire,transmission
  - visual lookout - restricted, pilot in command (contributing factor)
- In flight collision with terrain/water, descent - uncontrolled

## Aircraft

- Registration: [N21GC](https://openairdocs.org/deregistered/N21GC-2012-08-09), registration cancelled 2012-08-09, S/N P3370130, built 1973 (OpenAirDocs)
- Reported make and model: CESSNA T-337G-P
- Registry model: [Cessna T337G](https://openairdocs.org/model/cessna-t337g) (registry code 2075726) (OpenAirDocs)
- Registry engine: [Continental IO-360 series](https://openairdocs.org/engine/continental-io-360-series) (registry code 17025, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: P3370130
- Engines: CONTINENTAL TSIO-360-C 225 horsepower reciprocating
- Damage: Substantial damage
- Flight: Business, Part 91
- Registered owner: Stanley, William
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, November 9, 1988, 141 hours before
- Departed: OLS, NOGALES, AZ
- Destination: LRD
- Airport: LRD, Laredo Int'L

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 47; commercial, airline transport, military; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: right; flight hours: 4,398 total, 36 in this make and model, 3,872 as pilot in command, 70 in the last 90 days, 23 in the last 30 days, 5 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Night/dark
- Wind: 120° at 7 knots
- Visibility: 15 statute miles
- Lowest ceiling: none
- Temperature: 72 °F, dew point 45 °F
- Altimeter: 30.00 inHg
- Observed at: LRD, 5 nm away

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.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.