# Hughes 500D

- Type: Aircraft model (FAA registry)
- Registry code: 4470806
- Manufacturer (registry): HUGHES
- Model: 500D
- Aircraft type: Rotorcraft
- Category: Rotorcraft
- Engines: 1 · Turbo-shaft
- Seats: 7
- Weight class: Up to 12,499 lb
- Certification: Type certificated
- Data sheet: [TCDS H3WE](https://openairdocs.org/tcds/H3WE) (OpenAirDocs)
- Holder: MD Helicopters LLC
- Registered aircraft: 0
- Page: https://openairdocs.org/model/hughes-500d

Model codes come from the FAA registry's reference file. ADs are matched to them by model name and maker.

## ADs that may apply (OpenAirDocs)

Matched to this model by model name and maker. Each AD's applicability may narrow it by serial number, part number or equipment.

None matched.

## Registered aircraft

None registered with this model now.

## NTSB investigations (6)

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 CEN22LA146](https://openairdocs.org/ntsb/CEN22LA146), Mar 17, 2022: Hughes 369 (N500MZ), Adair, IA, substantial damage. Probable cause: The mechanic’s failure to properly torque a fuel control unit B-nut, which resulted in a partial loss of engine power, an attempted autorotation, and an impact with terrain.
- [NTSB LAX03FA200](https://openairdocs.org/ntsb/LAX03FA200), Jun 15, 2003: McDonnell Douglas 369D (N4493M), Volcano, HI, destroyed, 4 fatal. Probable cause: a loss of engine power due to the fatigue fracture and separation of the compressor coupling adapter. The fatigue fracture was initiated by fretting on the pilot diameter due to both the inadequate…
- [NTSB ANC95LA075](https://openairdocs.org/ntsb/ANC95LA075), Jun 12, 1995: Hughes 500D (N549SW), Ketchikan, AK, substantial damage. Probable cause: AN AIR LEAK AT A 'B' NUT FITTING ON A PNEUMATIC PC TUBE TO THE POWER TURBINE GOVERNOR. COMPANY MAINTENANCE PERSONNEL DID NOT DETECT A LEAK AFTER PERFORMING MAINTENANCE ON THE GOVERNER AND P2 AIR LINE.
- [NTSB FTW86LA152](https://openairdocs.org/ntsb/FTW86LA152), Aug 20, 1986: Hughes 369-500D (N4493M), Fort Stockton, TX, substantial damage
- [NTSB ANC82DA062](https://openairdocs.org/ntsb/ANC82DA062), Jul 28, 1982: Hughes 369D (N820Y), Near Bornite, AK, destroyed, 1 fatal
- [NTSB DEN80FTC12](https://openairdocs.org/ntsb/DEN80FTC12), Apr 9, 1980: Hughes 369D (N49667), Chugwater, WY, destroyed

## FAA accident and incident reports (6)

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 20220317001229A](https://openairdocs.org/incident/20220317001229A), Mar 17, 2022: Hughes 500D (N500MZ), Adair, IA, Destroyed. During flight operations helicopter engine entered a low power setting. Pilot was unable to maintain altitude and subsequently crashed.
- [Accident 20030615014319A](https://openairdocs.org/incident/20030615014319A), Jun 15, 2003: Hughes 369D (N4493M), Hilo, HI, Destroyed, 4 fatal. (-23) Suspected engine failure.
- [Accident 19950612017399A](https://openairdocs.org/incident/19950612017399A), Jun 12, 1995: Hughes 369D (N549SW), Kethcikan, AK, Substantial damage. Lost power, autorotated to hard landing in gravel pit. Severed tailbom. Air leak pc line b nut caused flameout.
- [Accident 19860820044119A](https://openairdocs.org/incident/19860820044119A), Aug 20, 1986: Hughes 369D (N4493M), Ft Stockton, TX, Substantial damage. Aircraft was damaged during a hard emergency landing. Engine failed from fuel exhaustion.
- [Accident 19820728035729A](https://openairdocs.org/incident/19820728035729A), Jul 28, 1982: Hughes 369D (N820Y), Bornite, AK, Destroyed. Helicopter rotor blade hit rocky embankment on upslope side of takeoff zone.
- [Accident 19800409008229A](https://openairdocs.org/incident/19800409008229A), Apr 9, 1980: Hughes 369D (N49667), Chugwater, WY, Destroyed. Helicopter started to pull external load wire. Ground crew inadvertently put on tension. Wire hit rotors.

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