# NTSB DEN87LA119: Cessna A188B, N9282R, St. Ignatius, MT, May 6, 1987

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: May 6, 1987, 10:15 local (16:15 UTC)
- Place: St. Ignatius, MT
- Coordinates: 47.320198, -114.02095 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=47.3202&lon=-114.0209&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report August 31, 1988
- Report: Approved by Office Director
- NTSB case key (mKey): 17220
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN87LA119
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/17220/pdf
- Page: https://openairdocs.org/ntsb/DEN87LA119

## Sequence of events

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

- Loss of engine power(total) - mech failure/malf, maneuvering - aerial application
  - engine assembly,crankshaft - brittle fracture (cause)
- Forced landing, descent - emergency
- On ground/water encounter with terrain/water, landing - roll
  - terrain condition - hidden obstruction(s) (contributing factor)
  - terrain condition - ditch (contributing factor)
- On ground/water collision with object, landing - roll
  - object - fence (contributing factor)

## Analysis

AN AG PLT WAS SPRAYING A FIELD NEAR THE LOCAL ARPT, AT 100 FEET AGL. DURING AN AERIAL APPLICATION MANEUVER, THE ENGINE MADE A LOUD BANG AND STOPPED. THE PLT LEVELED THE ACFT, SELECTED A LANDING SITE AND LANDED. DURING THE ROLL OUT, THE ACFT CROSSED AN IRRIGATION DITCH AND HIT A FENCE. THE LEFT GEAR WAS REMOVED BY A FENCE POST AND THE ACFT SKIDDED, RIGHT WING FIRST, TO A STOP. A POST CRASH INSPECTION OF THE ENGINE SHOWED A FAILURE OF THE CRANKSHAFT. A SERVICE BULLETIN ISSUED IN FEBRUARY, 1987, WARNED OF SOME PREVIOUS FAILURES OF CRANKSHAFTS IN THIS ENGINE.

## Aircraft

- Registration: [N9282R](https://openairdocs.org/deregistered/N9282R-2006-07-21), registration cancelled 2006-07-21, S/N 18802210T, built 1975 (OpenAirDocs)
- Reported make and model: CESSNA A188B
- Registry model: [Cessna A188B](https://openairdocs.org/model/cessna-a188b) (registry code 2073005) (OpenAirDocs)
- Registry engine: [Continental IO-520 series](https://openairdocs.org/engine/continental-io-520-series) (registry code 17032, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 18802210T
- Airframe hours: 2432
- Engines: CONTINENTAL IO-520 300 horsepower reciprocating
- Damage: Substantial damage
- Flight: Aerial application, Part 137
- Operator: Daryl V. Cooper, doing business as D. B. Cooper Flight Enter.
- Registered owner: Cooper Daryl V
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: Annual, April 1, 1987, 14 hours before
- Departed: 7SO, RONAN, MT

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 34; commercial; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: center; flight hours: 2,342 total, 1,495 in this make and model, 2,240 as pilot in command, 15 in the last 90 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 30 statute miles
- Lowest ceiling: none
- Temperature: 55 °F

## 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 19870506012389A](https://openairdocs.org/incident/19870506012389A), May 6, 1987: Cessna A188B, St Ignatius, MT, Substantial damage. The agricultural spray aircraft made an emergency landing when the engine failed. The crankshaft was broken.

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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