DEN92IA046

NTSB incident investigation · Cessna 310-L · Hugo, CO · April 12, 1992

Incident · No injuriesIncident investigationFinal report
Date
April 12, 1992, 11:00 local (17:00 UTC)
Place
Hugo, CO
Injuries
1 uninjured
Damage
No damage
Phase of flight
Enroute
Aircraft
N331BXCessna 310-L
Weather
Visual (VMC) · Day
Status
Completed · report June 30, 1993
Report
Approved by Office Director
Case key
18169

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

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Probable cause

Failure of the left voltage regulator. Factors were: failure of the pilot/mechanic to properly maintain the aircraft, and failure of the right alternator circuit breaker.

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.

FireCruise - normal
Electrical system,voltmeter - failure,totalCause
Maintenance - not performedPilot in command
Electrical system,circuit breaker - failure,totalFactor

Analysis

While in cruise flight, on an IFR flight plan, with the right alternator inoperative, the left voltage regulator failed causing an over voltage and subsequent electrical fire. The fire was extinguished and the flight continued without communications or navigation equipment to the planned destination where repairs were conducted.

Aircraft

Registration
N331BX
Reported as
Cessna 310-L
Category
Airplane
Serial number
0168
Engine
Continental IO-470, 260 horsepower, reciprocating
Damage
No damage
Fire
In-Flight
Flight
Personal · Part 91
Operator
Bell, Anthony H.
Registered owner
Bell, Anthony H.
Airworthiness certificate
Standard, Normal
Last inspection
Unknown · January 2, 2000
Departed
HQZ · Mesquite, TX
Destination
APA · Englewood, CO
Flight plan
IFR

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
34
Certificate
Commercial
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
1,108 total · 60 in this make and model · 1,054 as pilot in command · 71 in the last 90 days · 20 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Visibility
20 statute miles
Lowest ceiling
None
Temperature
70 °F