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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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NTSB Report

June 27, 1992 · Navion H · N2550T

Gillette, WY

Overview

Report Status
Probable Cause
Event Type
Accident
Date
June 27, 1992
Injury Outcomes
1 injury (1 minor injury), 2 uninjured
Location
Gillette, WY
Aircraft
Navion H
Tail Number
N2550T
Operator
Eckert Edwin J
Injuries
Minor
Aircraft Damage
Substantial
NTSB Number
SEA92LA138

IMMEDIATELY AFTER TAKEOFF, AT ABOUT 100 FT AGL, THERE WAS AN ABRUPT LOSS OF POWER. THE PILOT LOWERED THE LANDING GEAR & EXECUTED A FORCED LANDING STRAIGHT AHEAD. THE GEAR DID NOT FULLY EXTEND, AND RETRACTED AT TOUCHDOWN. POST CRASH EXAMINATION REVEALED THAT THE INDUCTION AIR 'SCAT' TUBE INNER WALL HAD COLLAPSED AT A 90 DEG BEND, RESTRICTING INTAKE AIR TO THE ENGINE. THE TUBING WAS INSTALLED AS PER A ONE TIME FIELD APPROVED STC. THE ALTERNATE AIR BYPASS WAS DOWNSTREAM OF THE 'SCAT' TUBING. THE TUBING WAS OF A DOUBLE WALL DESIGN WHICH CHARACTERISTICALLY CAN DELAMINATE WHEN EXPOSED TO HIGH HEAT.

NTSB Probable Cause

AN ENGINE POWER LOSS DUE TO THE COLLAPSE OF THE INDUCTION AIR DUCTING, INADEQUATE MAINTENANCE, AND IMPROPER APPROVAL OF THE MODIFICATION.

Full Narrative

IMMEDIATELY AFTER TAKEOFF, AT ABOUT 100 FT AGL, THERE WAS AN ABRUPT LOSS OF POWER. THE PILOT LOWERED THE LANDING GEAR & EXECUTED A FORCED LANDING STRAIGHT AHEAD. THE GEAR DID NOT FULLY EXTEND, AND RETRACTED AT TOUCHDOWN. POST CRASH EXAMINATION REVEALED THAT THE INDUCTION AIR 'SCAT' TUBE INNER WALL HAD COLLAPSED AT A 90 DEG BEND, RESTRICTING INTAKE AIR TO THE ENGINE. THE TUBING WAS INSTALLED AS PER A ONE TIME FIELD APPROVED STC. THE ALTERNATE AIR BYPASS WAS DOWNSTREAM OF THE 'SCAT' TUBING. THE TUBING WAS OF A DOUBLE WALL DESIGN WHICH CHARACTERISTICALLY CAN DELAMINATE WHEN EXPOSED TO HIGH HEAT.

Flight

Event TypeAccident
Event Time07:48 MDT
Nearest AirportCampbell County (0nm N)
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo

Aircraft

AircraftNavion H
Tail NumberN2550T
Aircraft CategoryAir
DamageSubstantial
OperatorEckert Edwin J
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsContinental · TSIO-520-13A · Reciprocating · 285
Seats4

People & Injuries

Injury Summary1 injury (1 minor injury), 2 uninjured
Fatal0
Serious0
Minor1
Uninjured2
Total3
Crew 1Age 67 · Second Class

Conditions

ConditionsVMC
LightDaylight
Wind80° @ 1 kt
Visibility20 sm
CeilingNone
Temperature / Dew Point55 / 50
Altimeter29.00 inHg
Observation Time12:48
Weather SourceWFAC

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Appendix: Source Data