# N955SD: 1996 Mcdonnell Douglas Helicopter 500N, registration cancelled 2004-07-26

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: July 26, 2004
- Exported to: New Zealand
- Status when cancelled: Triennial form not returned
- Airframe: [Mcdonnell Douglas Helicopter 500N](https://openairdocs.org/model/mcdonnell-douglas-helicopter-500n) (registry code 3027374)
- Engine: [Allison 250-C20 series](https://openairdocs.org/engine/allison-250-c20-series) (registry code 03020)
- Data sheets: [TCDS H3WE](https://openairdocs.org/tcds/H3WE), [TCDS E4CE](https://openairdocs.org/tcds/E4CE) (OpenAirDocs)
- Serial number: LN080
- Year built: 1996
- Type of aircraft: Rotorcraft
- Engine type: Turbo-prop
- Airworthiness: Standard, normal
- Airworthiness date: May 10, 1996
- Certificate issued: October 10, 1996
- Last registry action: October 15, 2002
- Mode S code: AD48CE
- Owners when cancelled: [Los Angeles County Sheriffs Department](https://openairdocs.org/faa-owner/LOS%20ANGELES%20COUNTY%20SHERIFFS%20DEPARTMENT), [4700 Ramona Blvd](https://openairdocs.org/faa-owner/4700%20RAMONA%20BLVD)
- Location: [Monterey Park, CA](https://openairdocs.org/faa-place/CA/Monterey%20Park)
- Owner type: Government
- Owner's area on the map: 34.0529° N, 118.1435° W: Placed by OpenAirDocs at the center of ZIP code 91754, within about a mile (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N955SD
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=955SD
- Page: https://openairdocs.org/deregistered/N955SD-2004-07-26

From the FAA registry file of October 29, 2026, cancelled registrations. Owners' street addresses are left out. The Mode S code belongs to the N-number, not the airframe.

ADs and bulletins for the Mcdonnell Douglas Helicopter 500N: https://openairdocs.org/model/mcdonnell-douglas-helicopter-500n.md

## NTSB investigations (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 LAX00TA186](https://openairdocs.org/ntsb/LAX00TA186), May 8, 2000: McDonnell Douglas 500N (N955SD), Los Angeles, CA, substantial damage. Probable cause: The combined failure of the operator management and the check pilot to ensure the landing area was suitable for the slide on landing. Factors were the high vegetation that entangled the skids,…

## FAA accident and incident reports (1)

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [Accident 20000508036159A](https://openairdocs.org/incident/20000508036159A), May 8, 2000: Hughes 500N (N955SD), Los Angeles, CA, Substantial damage. (-23) On may 8, 2000 at approx. 9:25 am PDT, a Mcdonnell Douglas 520N helicopter, N955SD, sustained substantial damage while performing off-airport training in…

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