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Aviation safety reports, made easier to study

NTSB Reports is an independent research and search tool for public aviation accident and incident records. It brings NTSB aviation reports, structured fields, docket files, extracted figures, photos, videos, and update history into one searchable interface.

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April 23, 1991 · Piper PA-22-108 · N5421Z

Millard, NE

Overview

Report Status
Probable Cause
Event Type
Accident
Date
April 23, 1991
Injury Outcomes
No injuries (2 uninjured)
Location
Millard, NE
Aircraft
Piper PA-22-108
Tail Number
N5421Z
Operator
Dale E Frimodt
Injuries
None
Aircraft Damage
Destroyed
NTSB Number
CHI91LA138

THE PILOT SAID THAT SHORTLY AFTER TAKEOFF, AN ELECTRICAL FIRE ERUPTED UNDER THE PASSENGER'S SEAT. AN EMERGENCY LANDING WAS MADE WHICH RESULTED IN DAMAGE TO THE AIRPLANE. THE AIRPLANE WAS DESTROYED BY A POST-LANDING FIRE. POST-ACCIDENT INVESTIGATION REVEALED THAT THE AIRPLANE HAD BEEN STARTED WITH A 24 VOLT BOOST INSTEAD OF A 12 VOLT BOOST WHICH RESULTED IN MELTED WIRES AND THE SUBSEQUENT SHORT AND FIRE.

NTSB Probable Cause

IMPROPER USE OF APU BY UNKNOWN PERSONNEL WHICH RESULTED IN THE AIRPLANE'S ELECTRICAL WIRING MELTING AND SUBSEQUENT SHORT.

Full Narrative

THE PILOT SAID THAT SHORTLY AFTER TAKEOFF, AN ELECTRICAL FIRE ERUPTED UNDER THE PASSENGER'S SEAT. AN EMERGENCY LANDING WAS MADE WHICH RESULTED IN DAMAGE TO THE AIRPLANE. THE AIRPLANE WAS DESTROYED BY A POST-LANDING FIRE. POST-ACCIDENT INVESTIGATION REVEALED THAT THE AIRPLANE HAD BEEN STARTED WITH A 24 VOLT BOOST INSTEAD OF A 12 VOLT BOOST WHICH RESULTED IN MELTED WIRES AND THE SUBSEQUENT SHORT AND FIRE.

Flight

Event TypeAccident
Event Time12:40 CDT
Nearest Airport0nm N
Runway0
Flight Plan FiledNone
Aircraft FireBoth
Aircraft ExplosionBoth

Aircraft

AircraftPiper PA-22-108
Tail NumberN5421Z
Aircraft CategoryAir
DamageDestroyed
OperatorDale E Frimodt
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-235-C1B · Reciprocating · 108
Seats2

People & Injuries

Injury SummaryNo injuries (2 uninjured)
Fatal0
Serious0
Minor0
Uninjured2
Total2
Crew 1Age 44 · Third Class

Conditions

ConditionsVMC
LightDaylight
Wind350° @ 14 kt
Visibility15 sm
CeilingNone
Temperature / Dew Point0 C / 0 C
Altimeter0
Observation Time17:50
Weather SourceWFAC

Appendix: Source Data