SEA90FA100

NTSB accident investigation · Champion 7KCAB · Pocatello, ID · June 11, 1990

Accident · FatalField investigationFinal report
Date
June 11, 1990, 16:20 local (22:20 UTC)
Place
Pocatello, ID
Injuries
2 fatal
Damage
Destroyed
Phase of flight
Maneuvering
Aircraft
N1877GChampion 7KCAB
Weather
Visual (VMC) · Day
Status
Completed · report April 30, 1992
Report
Approved by Office Director
FAA report
19900611019839A
Case key
41113

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

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.

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.

Loss of control - in flightManeuvering
Judgment - poorPilot in command(cfi)Cause
Low pass - intentionalPilot in command(cfi)Cause
Altitude - inadequatePilot in command(cfi)Cause
Aircraft weight and balance - exceededPilot in command(cfi)Factor
Weather condition - gustsFactor
Stall - inadvertentCause
In flight collision with terrain/waterManeuvering

Analysis

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.

Aircraft

Registration
N1877G
Reported as
Champion 7KCAB
Category
Airplane
Serial number
108
Airframe hours
1,820
Engine
Lycoming IO-320-E2A, 150 horsepower, reciprocating
Damage
Destroyed
Flight
Instructional · Part 91
Registered owner
Northwest Aviation, Inc.
Airworthiness certificate
Standard, Aerobatic; Standard, Normal
Last inspection
Annual · April 11, 1990 · 32 hours before
Departed
PIH · Pocatello, ID
Airport
NONE

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
48
Certificate
Commercial
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Rear
Toxicology
Performed
Flight hours
3,188 total · 450 in this make and model · 2,948 as pilot in command · 100 in the last 90 days · 25 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
260° at 18 knots, gusting 27
Visibility
90 statute miles
Lowest ceiling
None
Temperature
63 °F, dew point 30 °F
Altimeter
30.00 inHg
Observed at
PIH, 5 nm away

FAA reports on this event · 1

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

Other investigations on N1877G · 1

Matched to the same aircraft by N-number and date.