# NTSB CHI85LA239: Boeing A75N1, N57250, Deckerville, MI, June 16, 1985

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: June 16, 1985, 17:00 local (21:00 UTC)
- Place: Deckerville, MI
- Coordinates: 43.519771, -82.739166 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=43.5198&lon=-82.7392&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 13099
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI85LA239
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/13099/pdf
- Page: https://openairdocs.org/ntsb/CHI85LA239

## Sequence of events

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

- Loss of control - in flight, maneuvering
  - object - tree(s) (contributing factor)
  - visual lookout - inadequate, pilot in command (cause)
  - airspeed - not maintained, pilot in command (cause)
  - stall - uncontrolled, pilot in command
- In flight collision with terrain/water, descent - uncontrolled
- Nose over, other
  - terrain condition - soft (contributing factor)

## Analysis

PURPOSE OF THE FLT WAS A 'FLOUR BOMBING CONTEST'. AFTER DROPPING A 'FLOUR BOMB' THE PLT ENTERED A RIGHT BANK TO AVOID TREES ALONG THE FLT PATH. THE ACFT THEN STALLED AND IMPACTED THE GROUND ON THE MAIN GEAR AFTER WHICH IT NOSED OVER.

## Aircraft

- Registration: [N57250](https://openairdocs.org/aircraft/N57250), registered now, S/N 75-2728, built 1941 (OpenAirDocs)
- Reported make and model: BOEING A75N1
- Registry model: [Boeing A75N1(PT17)](https://openairdocs.org/model/boeing-a75n1-pt17) (registry code 1380134) (OpenAirDocs)
- Registry engine: [Continental W670 series](https://openairdocs.org/engine/continental-w670-series) (registry code 17018, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 75-2728
- Airframe hours: 5313
- Engines: CONTINENTAL 220 reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Hal Mullett
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, August 1, 1984, 66 hours before
- Departed: DECKERVILLE, MI

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 36; private; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim.; seat: rear; flight hours: 1,065 total, 66 in this make and model, 1,015 as pilot in command, 54 in the last 90 days, 3 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 270° at 10 knots, gusting 15
- Visibility: 10 statute miles
- Lowest ceiling: none
- Temperature: 75 °F
- 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 19850616028309A](https://openairdocs.org/incident/19850616028309A), Jun 16, 1985: Boeing A75N1, Deckerville, MI, Substantial damage. Passenger dropped flour bomb on lower wing. Distracted pilot. Began go a round, stalled avoiding trees. Nosed over.

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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