FTW90FA015

NTSB accident investigation · Beech 58 · San Antonio, TX · October 24, 1989

Accident · No injuriesField investigationFinal report
Date
October 24, 1989, 01:38 local (06:38 UTC)
Place
San Antonio, TX
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N950JPBeech 58
Weather
Visual (VMC) · Night/dark
Status
Completed · report September 30, 1992
Report
Approved by Office Director
FAA report
19891024042499A
Case key
22998

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Probable cause

A fuel tank leak, arcing from the exterior lighting system, and failure of company/maintenance personnel to comply with an airworthiness directive (AD).

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Fire/explosionTakeoff - roll/run
Fuel system,tank - leakCause
Maintenance,aaip/progressive program - inadequateFactor
Condition(s)/step(s) not listedFactor
Exterior light(s) - arcingCause
Maintenance,compliance with ad - not performedCompany maintenance personnelCause

Analysis

After the pilot was cleared for takeoff, he activated the strobe lights and transponder. Approximately 2 to 5 seconds later, a minor explosion occurred and fire engulfed the right wing. The airplane had a recent history of fuel leaks in the right wing. A review of the maintenance records revealed that airworthiness directive (AD) 74-24-03 had not been accomplished. The AD stated, 'to preclude possible ignition of flammable fluids and vapors by arcing between the strobe light and aircraft structure, deactivate the strobe light system.' The operator's approved aircraft inspection program (aaip) did not address fuel systems and related components. The FAA subsequently issued directives revising the operator's aaip to include routine inspections of fuel systems and related components.

Aircraft

Registration
N950JP
Reported as
Beech 58
Category
Airplane
Serial number
TH432
Airframe hours
3,791
Engine
Continental IO-520-C, 285 horsepower, reciprocating
Damage
Substantial damage
Fire
On-Ground
Flight
Part 135
Operator
Air Exchange
Registered owner
Donald C. Auclair
Airworthiness certificate
Standard, Normal
Last inspection
AAIP · October 16, 1989 · 18 hours before
Departed
SAT
Destination
DAL · Dallas, TX
Flight plan
IFR
Airport
SAT · San Antonio Intl, runway 3, 7,505 × 150 ft, asphalt

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
32
Certificate
Commercial
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
1,500 total · 200 in this make and model · 1,400 as pilot in command · 190 in the last 90 days · 63 in the last 30 days · 6 in the last 24 hours

Weather

Conditions
Visual (VMC) · Night/dark
Wind
Calm
Visibility
15 statute miles
Lowest ceiling
None
Temperature
70 °F

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.