# NTSB MKC83FA177: Piper PA-25-235, N7620Z, Bentley, KS, August 5, 1983

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Field investigation · Final report
- Date: August 5, 1983, 06:20 local (11:20 UTC)
- Place: Bentley, KS
- Coordinates: 37.889533, -97.509933 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=37.8895&lon=-97.5099&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 1 fatal
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 33344
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC83FA177
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/33344/pdf
- Page: https://openairdocs.org/ntsb/MKC83FA177

## 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/mush - not corrected, pilot in command (cause)
  - lack of recent experience in type operation, pilot in command (cause)
  - load jettison - not performed, pilot in command (cause)
- In flight collision with terrain/water, descent - uncontrolled

## Analysis

THE ACFT STALLED, CRASHED, NOSED OVER AND BURNED DURING AN AERIAL APPLICATION MANEUVER. THE OWNER OF THE ACFT WAS SPRAYING THE SAME FIELD IN ANOTHER ACFT AND SAW THE ACCIDENT. HE STATED, THE ACFT PULLED UP AT THE COMPLETION OF A RUN, WAS IN A TURN AROUND WHEN THE NOSE PITCHED UP AND THE ACFT STALL-MUSHED TO THE GROUND. THE CHEMICAL LOAD WHICH WEIGHED 700-800 LBS WAS NOT DUMPED PRIOR TO IMPACT.

## Aircraft

- Registration: [N7620Z](https://openairdocs.org/deregistered/N7620Z-1985-12-11), registration cancelled 1985-12-11, S/N 25-3739 (OpenAirDocs)
- Reported make and model: PIPER PA-25-235
- Registry model: [Piper PA-25-235](https://openairdocs.org/model/piper-pa-25-235) (registry code 7102504) (OpenAirDocs)
- Category: Airplane
- Serial number: 25-3739
- Airframe hours: 3300
- Engines: LYCOMING O-540-B2B5 235 horsepower reciprocating
- Damage: Destroyed
- Fire: On-Ground
- Flight: Aerial application, Part 137
- Registered owner: Blocker Flying Service, Ltd.
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: Annual, March 10, 1983
- Departed: HAVEN, KS

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 47; commercial; airplane ratings: single-engine land; medical: class 2, valid medical--no waivers/lim.; seat: center; toxicology performed; flight hours: 1,489 total, 101 in this make and model, 11 in the last 90 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 180° at 4 knots
- Visibility: 10 statute miles
- Lowest ceiling: none
- Temperature: 72 °F, dew point 61 °F
- Altimeter: 30.00 inHg
- Observed at: ICT, 14 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 (OpenAirDocs).

- [Accident 19830805039139A](https://openairdocs.org/incident/19830805039139A), Aug 5, 1983: Piper PA25235, Bentley, KS, Destroyed. Stalled on a pullup from a spray run. Crashed and burned.

## Other investigations on N7620Z (1)

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.

- [NTSB MKC73FTK18](https://openairdocs.org/ntsb/MKC73FTK18), Jun 22, 1973: Piper PA-25 (N7620Z), Gettysburg, SD, substantial damage

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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