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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 11, 1990 · Champion 7KCAB · N1877G

Pocatello, ID

Overview

Report Status
Probable Cause
Event Type
Accident
Date
June 11, 1990
Injury Outcomes
2 injuries (2 fatalities)
Location
Pocatello, ID
Aircraft
Champion 7KCAB
Tail Number
N1877G
Injuries
Fatal
Aircraft Damage
Destroyed
NTSB Number
SEA90FA100

THE ACFT WAS ON A STUDENT TRAINING FLT IN AN AREA WHERE THE INSTRUCTOR WAS KNOWN TO HAVE STUDENTS PERFORM LOW LEVEL CONTOUR FOLLOWING FLTS AT ALTITUDES AS LOW AS 10 FT AGL FOLLOWING THE WINDING SNAKE RIVER. THESE FLIGHTS REQUIRED CONSTANT STEEP TURNS WITH 60-70 DEG BANK ANGLES TO STAY OVER THE RIVER. THE 54-HR STUDENT PILOT WAS ON HIS 2ND LOCAL TRAINING FLT SINCE RESUMING FLT TRAINING AFTER BEING INACTIVE FOR 8 YEARS. THE ACFT WAS OVER GW AND OUT OF AFT CG LIMITS FOR AEROBATIC FLIGHT. WINDS AT THE TIME OF THE ACCIDENT WERE 18 KNOTS GUSTING TO 27.

NTSB Probable Cause

THE INSTRUCTOR PILOTS POOR JUDGEMENT IN PERFORMING LOW ALTITUDE STEEP TURN MANEUVERS RESULTING IN AN INADVERTANT STALL AT AN ALTITUDE TOO LOW FOR RECOVERY. FACTORS IN THE ACCIDENT WERE THE OVER GROSS WEIGHT AND OUT-OF-CG AIRCRAFT LOADING, AND STRONG GUSTY WINDS.

Full Narrative

THE ACFT WAS ON A STUDENT TRAINING FLT IN AN AREA WHERE THE INSTRUCTOR WAS KNOWN TO HAVE STUDENTS PERFORM LOW LEVEL CONTOUR FOLLOWING FLTS AT ALTITUDES AS LOW AS 10 FT AGL FOLLOWING THE WINDING SNAKE RIVER. THESE FLIGHTS REQUIRED CONSTANT STEEP TURNS WITH 60-70 DEG BANK ANGLES TO STAY OVER THE RIVER. THE 54-HR STUDENT PILOT WAS ON HIS 2ND LOCAL TRAINING FLT SINCE RESUMING FLT TRAINING AFTER BEING INACTIVE FOR 8 YEARS. THE ACFT WAS OVER GW AND OUT OF AFT CG LIMITS FOR AEROBATIC FLIGHT. WINDS AT THE TIME OF THE ACCIDENT WERE 18 KNOTS GUSTING TO 27.

Flight

Event TypeAccident
Event Time16:20 MDT
Nearest Airport0nm N
Runway0
Runway Length0
Runway Width0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo

Aircraft

AircraftChampion 7KCAB
Tail NumberN1877G
Aircraft CategoryAir
DamageDestroyed
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · IO-320-E2A · Reciprocating · 150
Seats2

People & Injuries

Injury Summary2 injuries (2 fatalities)
Fatal2
Serious0
Minor0
Uninjured0
Total2
Crew 1Age 48 · Second Class

Conditions

ConditionsVMC
LightDaylight
Wind260° @ 18 kt, gusting 27 kt
Visibility90 sm
CeilingNone
Temperature / Dew Point63 F / 30 C
Altimeter30.00 inHg
Observation Time21:54
Weather SourceWFAC

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Appendix: Source Data