# NTSB FTW84LA192: Rockwell A-9B, N7776V, Lamont, OK, April 6, 1984

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: April 6, 1984, 09:30 local (15:30 UTC)
- Place: Lamont, OK
- Coordinates: 36.659126, -97.79914 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=36.6591&lon=-97.7991&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 21303
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW84LA192
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/21303/pdf
- Page: https://openairdocs.org/ntsb/FTW84LA192

## 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
  - airspeed - inadequate, pilot in command (cause)
  - diverted attention, pilot in command (cause)
  - stall/mush - inadvertent, pilot in command
- In flight collision with terrain/water, maneuvering - aerial application
- Main gear collapsed, other
  - landing gear,main gear - overload

## Analysis

THE PLT REPORTED THAT BETWEEN SWATH RUNS, HIS ATTENTION WAS DIRECTED TO SWATH MARKS ON THE GROUND, THEN HE TRIED TO DETERMINE HOW MUCH CHEMICAL WAS REMAINING IN THE HOPPER. AT ABOUT 100 FT AGL, WHILE IN A 50 DEG LEFT BANK, HE HEARD 'THE ENG SLOW DOWN' & FELT 'THE AIRPLANE SHAKE AS TRYING TO STALL.' HE THEN LOWERED THE NOSE & LEVELED THE WINGS, BUT THE ACFT IMPACTED THE GROUND & THE MAIN GEAR COLLAPSED. THE PLANE THEN SLID TO A STOP WITH DAMAGE TO THE PROP & LEFT WING. THE PLT DID NOT REPORT ANY MECHANICAL FAILURE OR MALFUNCTION.

## Aircraft

- Registration: [N7776V](https://openairdocs.org/deregistered/N7776V-2001-11-29), registration cancelled 2001-11-29, S/N 1530, built 1969 (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)
- Registry engine: [Lycoming TI0-540 series](https://openairdocs.org/engine/lycoming-ti0-540-series) (registry code 41533, turbo-prop) (OpenAirDocs)
- Category: Airplane
- Serial number: 1530
- Airframe hours: 2400
- Engines: LYCOMING IO-540-B1C5 290 horsepower reciprocating
- Damage: Substantial damage
- Flight: Aerial application, Part 137
- Operator: Homestead Flying Service
- Registered owner: David T. Kirk
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: Annual, February 14, 1984
- Departed: POND CREEK, OK

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 41; commercial; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: front; flight hours: 4,471 total, 307 in this make and model, 73 in the last 90 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 135° at 15 knots, gusting 20
- Visibility: 15 statute miles
- Lowest ceiling: none
- Altimeter: 30.00 inHg

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19840406059249A](https://openairdocs.org/incident/19840406059249A), Apr 6, 1984: Airpts A9B, Lamont, OK, Substantial damage. Aircraft stalled into ground during procedure turn on aerial application flight.

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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