# Helicopter Transport SVC CH-54A

- Type: Aircraft model (FAA registry)
- Registry code: 4450002
- Manufacturer (registry): HELICOPTER TRANSPORT SVC LLC
- Model: CH-54A
- Aircraft type: Rotorcraft
- Category: Rotorcraft
- Engines: 2 · Turbo-shaft
- Seats: 7
- Weight class: 20,000 lb and over
- Certification: Type certificated
- Registered aircraft: 1
- Page: https://openairdocs.org/model/helicopter-transport-svc-ch-54a

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 (1)

- [N793HT](https://openairdocs.org/aircraft/N793HT): [U S Leaseco Inc](https://openairdocs.org/faa-owner/U%20S%20LEASECO%20INC), [Aurora, OR](https://openairdocs.org/faa-place/OR/Aurora), built 1967, S/N 67-18427

## 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 ANC26FA079](https://openairdocs.org/ntsb/ANC26FA079), Aug 7, 2026: Helicopter Transport Services CH-54A (N793HT), Cove Fort, UT, destroyed, 2 fatal, investigation ongoing

## 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 20260807010199A](https://openairdocs.org/incident/20260807010199A), Aug 7, 2026: Helicopter Transport Svc LLC CH-54A (N793HT), Richfield, UT, Destroyed, 2 fatal. During part 133 firefighting flight. [privacy data omitted] Arrived from the northwest flying over the targeted drop zone. While maneuvering in a right turn…

## Service difficulty reports (7)

As reported by operators and repair stations, by the model named in the report.

- [SDR H3V2007F00000](https://openairdocs.org/sdr/H3V2007F00000), Jul 8, 2007: PIN. MISSING. ON JULY 8, 2007, HLH EXPERIENCED A HARD GROUND ROLLOVER OF AC. INITIAL INSPECTION OF THE WRECKAGE REVEALED A SERVO PIN, PN 6465-20201-101, FROM THE LT LATERAL S
- [SDR HL01102006001](https://openairdocs.org/sdr/HL01102006001), Oct 31, 2006: BEARING. FAILED. MAIN GEAR BOX BEGAN MAKING METAL, THIS WAS NONFERROUS METAL, UPON REMOVAL AND DISASSEMBLY IT WAS DISCOVERED THAT THE 1ST STAGE PLANETARY BEARING, P/NSB2410-2 HA
- [SDR H3V2005F00000](https://openairdocs.org/sdr/H3V2005F00000), Jul 19, 2005: STATOR. DAMAGED. FOD DAMAGE FROM RIVETS OF THE 1ST STAGE STATOR REAR AIRSEAL (2ND STAGE) DAMAGED THE COMPRESSOR BLADES. THIS CAUSED A STALL AND THE T5 TEMP ROSE TO 1000 DEGREES 
- [SDR JYD2001F00001](https://openairdocs.org/sdr/JYD2001F00001), Jun 20, 2001: SHAFT. CRACKED. EIGHT CRACKS FOUND IN LOWER SPLINES OF MAIN ROTOR SHAFT. MAIN GEARBOX PN 6435200400065, SN A6171 WAS REMOVED FOR OVERHAUL HAVING A TOTAL TIME OF 8857.7 AND 1430
- [SDR 20000404SH006](https://openairdocs.org/sdr/20000404SH006), Nov 4, 1999: PUMP. INOPERATIVE. UNIT WAS INOPERABLE. RETURNED TO STOCK. BENCH CHECKED BAD, WINDING SHORTED, LEAKING AROUND ELECTRICAL LEADS. REPLACED COMPLETE UNIT WITH AN EXTERNALLY MOUNTED F
- [SDR CHI1791](https://openairdocs.org/sdr/CHI1791), May 23, 1997: LOCKED IN STUD. BROKE. M/R BLADE STUD BROKE (IN TENSION) DIRECTLY BELOW LOCK RING SPLINES ABOVE FIRST THREAD. REPLACED AFFECTED MAIN ROTOR BLADE WITH SERVICEABLE BLADE.
- [SDR CHI1752](https://openairdocs.org/sdr/CHI1752), Mar 26, 1997: INTERMED GEARBOX. CRACKED. UPON INSPECTION IAW COLUMBIA HELICOPTERS SB 54-65-2, THE LEFT LOWER INTERMEDIATE GEARBOX MOUNT LUG WAS FOUND CRACKED. THIS WAS FOUND BY FLUORESCENT PENETRANT AN

## The same model under other registry codes

Amateur-built copies and renamed makers get their own codes.

- [Siller Helicopters CH-54A](https://openairdocs.org/model/siller-helicopters-ch-54a): 3 registered aircraft, registry code 8142567
- [Sikorsky CH-54A](https://openairdocs.org/model/sikorsky-ch-54a): 1 registered aircraft, registry code 8142501
- [Aviation International Rotors CH-54A](https://openairdocs.org/model/aviation-international-rotors-ch-54a): 1 registered aircraft, registry code 8142507
- [Evergreen Helicopters CH-54A](https://openairdocs.org/model/evergreen-helicopters-ch-54a): 1 registered aircraft, registry code 8142508
- [Silver Bay Logging CH-54A](https://openairdocs.org/model/silver-bay-logging-ch-54a): 0 registered aircraft, registry code 8160000

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