# NTSB SEA87LA101: Aero Commander AC-100, N3768X, Alderwood Manor, WA, May 24, 1987

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Limited investigation · Final report
- Date: May 24, 1987, 12:30 local (19:30 UTC)
- Place: Alderwood Manor, WA
- Coordinates: 48.699588, -122.190933 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=48.6996&lon=-122.1909&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 2 minor
- Status: Completed, report May 27, 1988
- Report: Approved by Office Director
- NTSB case key (mKey): 40629
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA87LA101
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/40629/pdf
- Page: https://openairdocs.org/ntsb/SEA87LA101

## Sequence of events

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

- Hard landing, landing - flare/touchdown
  - preflight planning/preparation - poor, pilot in command (cause)
  - proper climb rate - not obtained, pilot in command (cause)
  - terrain condition - high obstruction(s) (contributing factor)
  - precautionary landing - performed, pilot in command (cause)
  - descent - excessive, pilot in command (cause)

## Analysis

DURING TAKEOFF ON A SHORT 1700 FOOT AIRSTRIP UNDER NO WIND CONDITIONS, CLOSE TO GROSS WEIGHT, THE AIRCRAFT WAS NOT ABLE TO CLEAR TREES AT THE DEPARTURE END OF THE RUNWAY. THE PILOT RECOGNIZED THIS AND REDUCED POWER FOR A PRECAUTIONARY LANDING ONTO AN ADJACENT FIELD. A HARD LANDING THEN RESULTED.

## Aircraft

- Registration: [N3768X](https://openairdocs.org/deregistered/N3768X-1991-08-21), registration cancelled 1991-08-21, S/N 260 (OpenAirDocs)
- Reported make and model: AERO COMMANDER AC-100
- Registry model: [Aero Commander 100](https://openairdocs.org/model/aero-commander-100) (registry code 0140202) (OpenAirDocs)
- Category: Airplane
- Serial number: 260
- Airframe hours: 1426
- Engines: LYCOMING O-320 150 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: David L. Hubert
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, May 8, 1987, 7 hours before
- Departed: S13, ALDERWOOD MANOR, WA
- Destination: WA72, YELM, WA
- Airport: S13, Martha Lake, runway 34, 1,700 × 40 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 61; private; airplane ratings: single-engine land; medical: valid medical--w/ waivers/lim; seat: left; flight hours: 3,016 total, 405 in this make and model, 2,990 as pilot in command, 10 in the last 90 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 50 statute miles
- Lowest ceiling: none
- Temperature: 63 °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 19870524078789A](https://openairdocs.org/incident/19870524078789A), May 24, 1987: Slinds 100ACMDR, Alderwood Manor, WA, Substantial damage. Unable to clear trees on climbout. Aborted takeoff. Hard landing in adjacent field. Gross weight and no wind factor.

## Other investigations on N3768X (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 SEA71FWD26](https://openairdocs.org/ntsb/SEA71FWD26), Jan 3, 1971: Aero Comdr 100 (N3768X), Vashon Isl, WA, 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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