# NTSB CHI85LA206: Gulfstream American AA-5A, N9581U, New Hudson, MI, May 23, 1985

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Limited investigation · Final report
- Date: May 23, 1985, 15:30 local (19:30 UTC)
- Place: New Hudson, MI
- Coordinates: 42.499385, -83.609756 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=42.4994&lon=-83.6098&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 13075
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI85LA206
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/13075/pdf
- Page: https://openairdocs.org/ntsb/CHI85LA206

## Sequence of events

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

- In flight collision with object, takeoff
  - checklist - not followed, pilot in command (cause)
  - lack of total experience in type of aircraft, pilot in command (cause)
  - proper climb rate - not attained, pilot in command (cause)
  - remedial action - not performed, pilot in command (cause)
  - lowering of flaps - excessive, pilot in command (cause)
  - raising of flaps - not attained, pilot in command (cause)
  - object - tree(s) (contributing factor)
- In flight collision with terrain/water, descent - uncontrolled
- Fire/explosion, landing - roll
  - fuel system - cracked
  - fuel system - fire

## Analysis

THE PILOT INADVERTENTLY ATTEMPTED TO TAKE OFF WITH AT LEAST 21 DEG. OF FLAPS. THE ACFT CLIMBED TO APPROXIMATELY 30-50 8T. AGL AND PASSED OVER A HANGAR ON THE LEFT SIDE OF THE RUNWAY. ONCE PAST THE HANGAR THE ACFT BEGAN A RAPID DESCENT. POST IMPACT FIRE DESTROYED THE RIGHT WING AND COCKPIT.

## Aircraft

- Registration: [N9581U](https://openairdocs.org/deregistered/N9581U-2013-05-23), registration cancelled 2013-05-23, S/N AA5A-0081, built 1975 (OpenAirDocs)
- Reported make and model: Gulfstream American AA-5A
- Registry model: [Grumman American Avn. AA-5A](https://openairdocs.org/model/grumman-american-avn-aa-5a) (registry code 3960106) (OpenAirDocs)
- Registry engine: [Lycoming 0-320 series](https://openairdocs.org/engine/lycoming-0-320-series) (registry code 41508, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: AA-5A-0081
- Airframe hours: 1187
- Engines: LYCOMING O-320-E2G 150 horsepower reciprocating
- Damage: Destroyed
- Fire: On-Ground
- Flight: Personal, Part 91
- Registered owner: Graig G. Becker
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, April 24, 1985
- Airport: Y47, New Hudson, runway 36, 2,150 × 100 ft, grass/turf

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 30; private; airplane ratings: single-engine land; medical: class 3, valid medical--w/ waivers/lim; seat: left; flight hours: 139 total, 24 in this make and model, 24 in the last 90 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 90° at 8 knots
- Visibility: 12 statute miles
- Lowest ceiling: none
- Altimeter: 30.00 inHg
- Observed at: PTK, 17 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 19850523021019A](https://openairdocs.org/incident/19850523021019A), May 23, 1985: Gulstm AA5A, New Hudson, MI, Destroyed. Aircraft drifted from runway after takeoff. Cleared hangars but impacted trees.

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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