# North American HARVARD 4

- Type: Aircraft model (FAA registry)
- Registry code: 6400430
- Manufacturer (registry): NORTH AMERICAN
- Model: HARVARD 4
- Aircraft type: Fixed wing single engine
- Category: Airplane
- Engines: 1 · Reciprocating
- Seats: 2
- Weight class: Up to 12,499 lb
- Cruise speed: 141 mph
- Certification: Type certificated
- Registered aircraft: 5
- Page: https://openairdocs.org/model/north-american-harvard-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 (5)

- [N1811B](https://openairdocs.org/aircraft/N1811B): [Onaero Inc](https://openairdocs.org/faa-owner/ONAERO%20INC), [Santa Monica, CA](https://openairdocs.org/faa-place/CA/Santa%20Monica), built 1952, S/N 20247
- [N28500](https://openairdocs.org/aircraft/N28500): [American Aircraft Sales LLC](https://openairdocs.org/faa-owner/AMERICAN%20AIRCRAFT%20SALES%20LLC), [Livermore, CA](https://openairdocs.org/faa-place/CA/Livermore), built 1946, S/N 2850
- [N4289C](https://openairdocs.org/aircraft/N4289C): [Dms Aviation Services LLC](https://openairdocs.org/faa-owner/DMS%20AVIATION%20SERVICES%20LLC), [Wildwood, MO](https://openairdocs.org/faa-place/MO/Wildwood), built 1952, S/N CCF-4-115
- [N7553U](https://openairdocs.org/aircraft/N7553U): [Fast Toys For Boys Ltd](https://openairdocs.org/faa-owner/FAST%20TOYS%20FOR%20BOYS%20LTD), [Wenatchee, WA](https://openairdocs.org/faa-place/WA/Wenatchee), built 1952, S/N 20365
- [N7554U](https://openairdocs.org/aircraft/N7554U): [Staehling Jonathan J](https://openairdocs.org/faa-owner/STAEHLING%20JONATHAN%20J), [Woodstock, IL](https://openairdocs.org/faa-place/IL/Woodstock), built 1952, S/N 20428

## NTSB investigations (2)

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 NYC80FHD14](https://openairdocs.org/ntsb/NYC80FHD14), May 10, 1980: Harvard MK-4 (N20425), Turnersville, NJ, substantial damage
- [NTSB LAX73FUG38](https://openairdocs.org/ntsb/LAX73FUG38), Feb 25, 1973: Harvard MK4 (N20425), Rubidoux, CA, substantial damage

## FAA accident and incident reports (4)

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 19900725051619I](https://openairdocs.org/incident/19900725051619I), Jul 25, 1990: Namer HARVARD4 (N4289C), Chicago/Waukega, IL, Minor damage. Left brake grabbed on a touch and go landing. Aircraft ground looped. No discrepancies found later.
- [Accident 19891215066699A](https://openairdocs.org/incident/19891215066699A), Dec 15, 1989: Namer HARVARD4 (N2048), Anchorage, AK, Substantial damage
- [Accident 19800510017869A](https://openairdocs.org/incident/19800510017869A), May 10, 1980: Namer HARVARDMK4 (N20425), Turnersville, NJ, Substantial damage. Pilot lost directional control during landing and ground-looped airplane.
- [Accident 19730225004279A](https://openairdocs.org/incident/19730225004279A), Feb 25, 1973: Namer HARVARD* (N20425), Rubidoux, CA, Substantial damage

## Service difficulty reports (4)

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

- [SDR CA051109005](https://openairdocs.org/sdr/CA051109005), Oct 31, 2005: LEAD. UNKNOWN. (CAN) AIRCRAFT TTSN 5412.7 HOURS. AD CF-2005-10 C/W SEPT 12/05. NO FAULT FOUND.
- [SDR CA051026006](https://openairdocs.org/sdr/CA051026006), Jun 23, 2005: ATTACH ANGLE. CRACKED. CRACK DETECTION INSPECTION AT WING ATTACHMENT ANGLES ON BOTH WINGS PER AD CF-2005-19. NO CRACK INDICATION WERE DISCOVERED ON THE WING ATTACHMENT ANGLES
- [SDR CA950913202](https://openairdocs.org/sdr/CA950913202), Aug 30, 1995: BRACKET. BROKEN. (CAN)DURING PREFLIGHT OF THE AIRCRAFT THE PILOT NOTICED THE OUTBOARD ELEVATOR HINGE BRACKET WAS BORKEN AND THE HEAD OF THE BOLT WAS FOUND MISSING. SUBMITTER BEL
- [SDR CA950913203](https://openairdocs.org/sdr/CA950913203), Aug 18, 1995: STAB REAR SPAR. CRACKED. (CAN)DURING INSPECTION THE LEFT OUTBOARD HINGE AREA ON THE REAR SPAR, IT WAS FOUND TO HAVE A ONE INCH CRACK ON THE LOWER BOLT HOLE AIRCRAFT REPAIRED AND SUBMITT

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