# Marshall Daniel R L-21

- Type: Aircraft model (FAA registry)
- Registry code: 05617SQ
- Manufacturer (registry): MARSHALL DANIEL R
- Model: L-21
- Aircraft type: Fixed wing single engine
- Category: Airplane
- Engines: 1 · Reciprocating
- Seats: 2
- Weight class: Up to 12,499 lb
- Certification: Not type certificated
- Registered aircraft: 1
- Page: https://openairdocs.org/model/marshall-daniel-r-l-21

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)

- [N453HC](https://openairdocs.org/aircraft/N453HC): [Wasilla, AK](https://openairdocs.org/faa-place/AK/Wasilla), built 2005, S/N 001, Registration pending

## 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 WPR26LA156](https://openairdocs.org/ntsb/WPR26LA156), Apr 10, 2026: Marshall Daniel R L-21 (N453HC), Cody, WY, substantial damage. Probable cause: The pilot's failure to maintain control of the airplane during the landing rollout, which resulted in a nose-over.

## 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 20260410005169A](https://openairdocs.org/incident/20260410005169A), Apr 10, 2026: Piper L-21 (N453HC), Cody, WY, Substantial damage. Pilot landed on mountain top landing spot and lost control when brakes were applied

## The same model under other registry codes

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

- [Chapton Don L-21](https://openairdocs.org/model/chapton-don-l-21): 1 registered aircraft, registry code 05630D0
- [Douglas W Blackburn L-21](https://openairdocs.org/model/douglas-w-blackburn-l-21): 1 registered aircraft, registry code 05641ZB
- [Piper L-21](https://openairdocs.org/model/piper-l-21): 1 registered aircraft, registry code 7101813
- [Piper-Insua L-21](https://openairdocs.org/model/piper-insua-l-21): 1 registered aircraft, registry code 7101839

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