# Johnson A-4

- Type: Aircraft model (FAA registry)
- Registry code: 0564417
- Manufacturer (registry): JOHNSON
- Model: A-4
- Aircraft type: Fixed wing single engine
- Category: Airplane
- Engines: 1 · Reciprocating
- Seats: 1
- Weight class: Up to 12,499 lb
- Cruise speed: 85 mph
- Certification: Not type certificated
- Registered aircraft: 0
- Page: https://openairdocs.org/model/johnson-a-4

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 (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 CHI95LA006](https://openairdocs.org/ntsb/CHI95LA006), Oct 6, 1994: Johnson A-4 (N1730H), Laporte, IN, destroyed. Probable cause: the pilot's inadvertant stall of the airplane while conducting a forced landing. A factor was the engine failure which occurred for an undetermined reason.

## 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 19941006033739A](https://openairdocs.org/incident/19941006033739A), Oct 6, 1994: Airpts A4 (N1730H), Laporta, IN, Destroyed. Reported power loss on takeoff. Prop shows power at impact. Was climbing nose high behind power curve. Stalled.

## The same model under other registry codes

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

- [Callair A-4](https://openairdocs.org/model/callair-a-4): 5 registered aircraft, registry code 1850108
- [Hannaford-Rose A-4](https://openairdocs.org/model/hannaford-rose-a-4): 1 registered aircraft, registry code 05601MQ
- [Eaglerock A-4](https://openairdocs.org/model/eaglerock-a-4): 0 registered aircraft, registry code 0400108
- [Hannaford A4](https://openairdocs.org/model/hannaford-a4): 0 registered aircraft, registry code 05628ML
- [Sutherland Graham A A4](https://openairdocs.org/model/sutherland-graham-a-a4): 0 registered aircraft, registry code 13015HL
- [Intermountain CALLAIR A-4](https://openairdocs.org/model/intermountain-callair-a-4): 0 registered aircraft, registry code 4570608

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