# Knoll John B-80

- Type: Aircraft model (FAA registry)
- Registry code: 130012V
- Manufacturer (registry): KNOLL JOHN
- Model: B-80
- Aircraft type: Rotorcraft
- Category: Rotorcraft
- Engines: 1 · Reciprocating
- Seats: 1
- Weight class: Up to 12,499 lb
- Certification: Not type certificated
- Registered aircraft: 0
- Page: https://openairdocs.org/model/knoll-john-b-80

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 BFO95LA056](https://openairdocs.org/ntsb/BFO95LA056), May 31, 1995: Knoll-Bensen B-80 (N12JK), Germansville, PA, substantial damage. Probable cause: the private pilot's misjudged flare, which resulted in a hard landing.

## 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 19950531017739A](https://openairdocs.org/incident/19950531017739A), May 31, 1995: Amtr B8M (N12JK), Germansville, PA, Substantial damage. Flared high on landing. Dropped to runway. Rotors struck tail and ground. Gyroplane then flipped on its side.

## Service difficulty reports (3)

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

- [SDR 99ZZZX1408](https://openairdocs.org/sdr/99ZZZX1408), Feb 12, 1999: BEARING. WORN. PILOT REPORTED LOW OIL PRESSURE. THE ENGINE WAS SHUT DOWN AND A LANDING WAS MADE AT CHILLICOTHE, MO. OIL PRESSURE RELIEF VALVE CLEANED, STARTED ENGINE AND OIL P
- [SDR 97ZZZX1950](https://openairdocs.org/sdr/97ZZZX1950), Apr 14, 1997: BEARING. DETERIORATED. SECTIONS FROM THE CENTER OF THE BEARING APPEARED TO DETERIORATE OR DISSOLVE WITH NO APPARENT REASON. QUALITY OF BEARING IS IN QUESTION.
- [SDR 95ZZZX3315](https://openairdocs.org/sdr/95ZZZX3315), Apr 28, 1995: MAGNETO. POINTS GROUNDED. ON THE THIRD FLIGHT OF THE DAY, THE LEFT ENGINE FAILED TO START. THE CAP WAS REMOVED FROM THE MAG AND MOISTURE WAS FOUND WHICH WAS GROUNDING THE VIBRATOR POINTS

## The same model under other registry codes

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

- [Beech B-80](https://openairdocs.org/model/beech-b-80): 1 registered aircraft, registry code 1153010
- [Smith Stephens M B-80](https://openairdocs.org/model/smith-stephens-m-b-80): 1 registered aircraft, registry code 130012Z
- [Rippy Kerry A B-80](https://openairdocs.org/model/rippy-kerry-a-b-80): 0 registered aircraft, registry code 130011Y
- [Jones Jeffrey Melvin B-80](https://openairdocs.org/model/jones-jeffrey-melvin-b-80): 0 registered aircraft, registry code 130012K
- [Milliken Charles W B-80](https://openairdocs.org/model/milliken-charles-w-b-80): 0 registered aircraft, registry code 130012N
- [Chael Donald L B-80](https://openairdocs.org/model/chael-donald-l-b-80): 0 registered aircraft, registry code 130012P
- [Lewis Robert C B-80](https://openairdocs.org/model/lewis-robert-c-b-80): 0 registered aircraft, registry code 130012R
- [Adin Peter B-80](https://openairdocs.org/model/adin-peter-b-80): 0 registered aircraft, registry code 130012W
- [Mason Scott J B-80](https://openairdocs.org/model/mason-scott-j-b-80): 0 registered aircraft, registry code 130012X
- [Lewis Clarence E B-80](https://openairdocs.org/model/lewis-clarence-e-b-80): 0 registered aircraft, registry code 130013C
- [Hayes Newell J SR B-80](https://openairdocs.org/model/hayes-newell-j-sr-b-80): 0 registered aircraft, registry code 130013D
- [Nodarse Julian B-80](https://openairdocs.org/model/nodarse-julian-b-80): 0 registered aircraft, registry code 1300148

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