# Tandem Rotor CH47D

- Type: Aircraft model (FAA registry)
- Registry code: 8840351
- Manufacturer (registry): TANDEM ROTOR LLC
- Model: CH47D
- Aircraft type: Rotorcraft
- Category: Rotorcraft
- Engines: 2 · Turbo-shaft
- Seats: 3
- Weight class: 12,500 to 19,999 lb
- Certification: Type certificated
- Data sheet: [TCDS R0014DE](https://openairdocs.org/tcds/R0014DE) (OpenAirDocs)
- Holder: Tandem Rotor LLC
- Registered aircraft: 5
- Page: https://openairdocs.org/model/tandem-rotor-ch47d

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.

- [AD 2024-20-05](https://openairdocs.org/ad/2024-20-05): Flight control systems · Columbia Helicopters 234 and CH-47D. Effective Oct 28, 2024
- [AD 2021-23-06](https://openairdocs.org/ad/2021-23-06): Rotor flight controls · Columbia Helicopters 234 and CH-47D. Effective Jan 4, 2022
- [AD 2018-16-11](https://openairdocs.org/ad/2018-16-11): Main Rotor Head · Billings Flying Service CH-47D, 234, CH-47D and 1 more. Effective Sep 17, 2018

## Registered aircraft (5)

- [N947CH](https://openairdocs.org/aircraft/N947CH): [Heligroup Fire LLC](https://openairdocs.org/faa-owner/HELIGROUP%20FIRE%20LLC), [Missoula, MT](https://openairdocs.org/faa-place/MT/Missoula), built 1990, S/N 86-1682
- [N948CH](https://openairdocs.org/aircraft/N948CH): [Heligroup Fire LLC](https://openairdocs.org/faa-owner/HELIGROUP%20FIRE%20LLC), [Missoula, MT](https://openairdocs.org/faa-place/MT/Missoula), built 1990, S/N 90-0202
- [N949CH](https://openairdocs.org/aircraft/N949CH): [Heligroup Fire LLC](https://openairdocs.org/faa-owner/HELIGROUP%20FIRE%20LLC), [Missoula, MT](https://openairdocs.org/faa-place/MT/Missoula), built 1990, S/N 90-0205
- [N950CH](https://openairdocs.org/aircraft/N950CH): [Construction Helicopters LLC](https://openairdocs.org/faa-owner/CONSTRUCTION%20HELICOPTERS%20LLC), [Howell, MI](https://openairdocs.org/faa-place/MI/Howell), built 1993, S/N 93-0932
- [N952CH](https://openairdocs.org/aircraft/N952CH): [Construction Helicopters LLC](https://openairdocs.org/faa-owner/CONSTRUCTION%20HELICOPTERS%20LLC), [Howell, MI](https://openairdocs.org/faa-place/MI/Howell), built 1992, S/N 92-0307

## NTSB investigations

None matched to aircraft with this model.

## 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.

- [Incident 20210423001989I](https://openairdocs.org/incident/20210423001989I), Apr 23, 2021: Tandem Rotor LLC CH47D (N949CH), Ludlow, CA, No damage. Approx 40 min. After departing from fuel stop in lancaster, CA. (Kwjf) enroute to AZ, the aircraft had a #2 afcs fault light, and began experiencing a "tail…

## STCs that may be installed (OpenAirDocs) (4)

Approved for this model: the STC's model list names it on its data sheet, or a series that includes it. In force first, then newest. The registry doesn't record which STCs an aircraft has.

- [STC SR02510SE](https://openairdocs.org/stc/SR02510SE): Installation of a Supplemental Lighting System. Aviation Specialties Unlimited Inc
- [STC SR02599SE](https://openairdocs.org/stc/SR02599SE): Installation of a Kawak Aviation Technologies Model 41300 auxiliary hydraulic system. Kawak Aviation Technologies, Inc
- [STC SR00788DE](https://openairdocs.org/stc/SR00788DE): Installation of Bubble Windows on BFS CH-47D Chinook Rotorcraft for Left and Right sides of the Pilot and Co-Pilot doors respectively. Billings Flying Service Inc
- [STC SR00836DE](https://openairdocs.org/stc/SR00836DE): Modification and Installation of the Pilot Left Seat Cyclic Stick and Thrust Lever Flight Controls. Tandem Rotor, LLC

## The same model under other registry codes

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

- [Boeing CH-47D](https://openairdocs.org/model/boeing-ch-47d): 22 registered aircraft, registry code 138160A
- [Billings Flying Service CH-47D](https://openairdocs.org/model/billings-flying-service-ch-47d): 6 registered aircraft, registry code 138160B
- [Boeing Helicopters CH-47D](https://openairdocs.org/model/boeing-helicopters-ch-47d): 6 registered aircraft, registry code 138260A
- [Columbia Helicopters CH-47D](https://openairdocs.org/model/columbia-helicopters-ch-47d): 3 registered aircraft, registry code 2340100

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