# Vertol H21A

- Type: Aircraft model (FAA registry)
- Registry code: 9420304
- Manufacturer (registry): VERTOL
- Model: H21A
- Aircraft type: Rotorcraft
- Category: Rotorcraft
- Engines: 1 · Reciprocating
- Seats: 1
- Weight class: 12,500 to 19,999 lb
- Cruise speed: 78 mph
- Certification: Type certificated
- Data sheet: [TCDS HR-35](https://openairdocs.org/tcds/HR-35) (OpenAirDocs)
- Holder: Heli-Crane Corporation
- Registered aircraft: 0
- Page: https://openairdocs.org/model/vertol-h21a

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 68-06-01](https://openairdocs.org/ad/68-06-01): Transmission Drive Shaft · Boeing Defense & Space Group 42A, 42B, 44A and 5 more. Effective Mar 21, 1968
- [AD 64-27-04](https://openairdocs.org/ad/64-27-04): Wood Rotor Blade Root Socket · Boeing Defense & Space Group 42A, 42B, H21A and 3 more. Effective Dec 10, 1964

## Registered aircraft

None registered with this model now.

## 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 LAX67A0086](https://openairdocs.org/ntsb/LAX67A0086), Mar 19, 1967: Vertol H-21-A (N9719Z), Hawthorne, CA, substantial damage

## FAA accident and incident reports

None matched to aircraft with this model.

## STCs that may be installed (OpenAirDocs) (2)

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 SH3319NM](https://openairdocs.org/stc/SH3319NM): Installation of Precise Flight Pulselite Control Unit in the Landing /Taxi Recognition Visual Control Light system,. Precise Flight Inc
- [STC SR02394AK](https://openairdocs.org/stc/SR02394AK): Replacement of existing landing and/or hover light bulbs with Light Emitting Diode (LED) lighting system. Seaplanes North LLC

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