# NTSB SEA88LA081: Rockwell A-9B, N7657V, Grace, ID, April 19, 1988

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Limited investigation · Final report
- Date: April 19, 1988, 15:00 local (21:00 UTC)
- Place: Grace, ID
- Coordinates: 42.509609, -111.739158 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=42.5096&lon=-111.7392&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 1 fatal
- Status: Completed, report November 16, 1989
- Report: Approved by Office Director
- NTSB case key (mKey): 40806
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA88LA081
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/40806/pdf
- Page: https://openairdocs.org/ntsb/SEA88LA081

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- Loss of control - in flight, maneuvering - aerial application
  - stall - inadvertent, pilot in command (cause)
  - lack of total experience in type operation, pilot in command (contributing factor)
  - impairment(drugs), pilot in command (contributing factor)
  - weather condition - high wind (contributing factor)
- In flight collision with terrain/water, descent - 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](https://openairdocs.org/deregistered/N7657V-1992-11-19), registration cancelled 1992-11-19, S/N 1385 (OpenAirDocs)
- Reported make and model: ROCKWELL A-9B
- Registry model: [Aero Commander CALLAIR A-9B](https://openairdocs.org/model/aero-commander-callair-a-9b) (registry code 0144206) (OpenAirDocs)
- Category: Airplane
- Serial number: 1385
- Airframe hours: 3075
- Engines: 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

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 52; 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

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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