# NTSB CHI88FA214: Hughes 269B, N9499F, Hampton, IL, August 21, 1988

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Field investigation · Final report
- Date: August 20, 1988, 19:35 local (Aug 21, 1988, 00:35 UTC)
- Place: Hampton, IL
- Location: 41.5565° N, 90.4034° W: Placed by OpenAirDocs: center of Hampton, IL, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=41.5565&lon=-90.4034&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 3 fatal
- Status: Completed, report January 24, 1990
- Report: Approved by Office Director
- NTSB case key (mKey): 13966
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI88FA214
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/13966/pdf
- Page: https://openairdocs.org/ntsb/CHI88FA214

## 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, cruise - normal
  - engine assembly,crankshaft - fatigue (contributing factor)
  - engine assembly,crankshaft - fractured (contributing factor)
- Forced landing, descent - emergency
- Loss of control - in flight, descent - emergency
  - autorotation - improper, pilot in command (cause)
  - adequate rotor rpm - not maintained, pilot in command (cause)
  - lack of total experience in type operation, pilot in command (cause)
- In flight collision with terrain/water, descent - uncontrolled

## Aircraft

- Registration: [N9499F](https://openairdocs.org/deregistered/N9499F-2013-05-23), registration cancelled 2013-05-23, S/N 870327, built 1968 (OpenAirDocs)
- Reported make and model: HUGHES 269B
- Registry model: [Hughes 269B](https://openairdocs.org/model/hughes-269b) (registry code 4470502) (OpenAirDocs)
- Registry engine: [Lycoming I0360 series](https://openairdocs.org/engine/lycoming-i0360-series) (registry code 41515, reciprocating) (OpenAirDocs)
- Category: Helicopter
- Serial number: 870327
- Airframe hours: 1311
- Engines: LYCOMING HIO-360-A1A 180 horsepower reciprocating
- Damage: Destroyed
- Flight: Business, Part 91
- Operator: Midwest Aviation Corp.
- Registered owner: Midwest Aviation Corp.
- Airworthiness certificate: Standard, Normal
- Last inspection: Unknown, August 8, 1988, 10 hours before

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 27; commercial, flight instructor; airplane ratings: single-engine land; medical: class 2, valid medical--w/ waivers/lim; seat: left; toxicology performed; flight hours: 341 total, 50 in this make and model, 194 as pilot in command, 38 in the last 90 days, 6 in the last 30 days, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 180° at 4 knots
- Visibility: 10 statute miles
- Lowest ceiling: none
- Temperature: 75 °F, dew point 64 °F
- Altimeter: 29.00 inHg
- Observed at: MLI, 9 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 19880820034159A](https://openairdocs.org/incident/19880820034159A), Aug 20, 1988: Hughes 269B, Hampton, IL, Destroyed, 3 fatal. Engine crankshaft failed. Pilot allowed rotor speed to decay causing a fatal vertical impact. Too low for emergency

## Other investigations on N9499F (2)

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 FTW74FQG69](https://openairdocs.org/ntsb/FTW74FQG69), Jun 18, 1974: Hughes 269B (N9499F), Slayton, TX, destroyed
- [NTSB FTW72DRG77](https://openairdocs.org/ntsb/FTW72DRG77), Apr 23, 1972: Hughes 269B (N9499F), Llano, TX, 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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