SEA88LA081

NTSB accident investigation · Rockwell A-9B · Grace, ID · April 19, 1988

Accident · FatalLimited investigationFinal report
Date
April 19, 1988, 15:00 local (21:00 UTC)
Place
Grace, ID
Injuries
1 fatal
Damage
Destroyed
Phase of flight
Maneuvering
Aircraft
N7657VRockwell A-9B
Weather
Visual (VMC) · Day
Status
Completed · report November 16, 1989
Report
Approved by Office Director
Case key
40806

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

On this page

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 - aerial application
Stall - inadvertentPilot in commandCause
Lack of total experience in type operationPilot in commandFactor
Impairment(drugs)Pilot in commandFactor
Weather condition - high windFactor
In flight collision with terrain/waterDescent - uncontrolled

Analysis

Plt/owner not certificated for aerial application. No record found of prior experience in aerial application. Replaced certificated plt for undet reason. Witnesses observed acft enter stall/spin during first aerial application turnaround maneuver in strong crosswind. Tox showed therapeutic level of diazepam (valium).

Aircraft

Registration
N7657V
Reported as
Rockwell A-9B
Category
Airplane
Serial number
1385
Airframe hours
3,075
Engine
Lycoming IO-540-G1C5, 290 horsepower, reciprocating
Damage
Destroyed
Flight
Aerial application · Part 137
Operator
Lloyd K. Wilson
Registered owner
Krech, Leonard G.
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Annual · March 4, 1988 · 15 hours before
Departed
U90 · Grace, ID
Airport
U90 · Grace Community

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
52
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Center
Toxicology
Performed
Flight hours
3,109 total · 25 in this make and model · 2,940 as pilot in command · 55 in the last 90 days · 25 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
270° at 20 knots, gusting 30
Visibility
15 statute miles
Lowest ceiling
4,000 ft overcast
Temperature
48 °F, dew point 36 °F
Altimeter
29.00 inHg
Observed at
U78, 6 nm away