# N133EH: 1982 MBB BO105 CBS4

- Status: Valid registration
- Airframe: [MBB BO105 CBS4](https://openairdocs.org/model/mbb-bo105-cbs4) (registry code 5626026, 6 seats)
- Engine: [Rolls-Royce 250-C20B](https://openairdocs.org/engine/rolls-royce-250-c20b) (registry code 54385)
- Data sheets: [TCDS E4CE](https://openairdocs.org/tcds/E4CE) (Rolls-Royce Corporation) (OpenAirDocs)
- Serial number: S-598
- Year built: 1982
- Type: Rotorcraft
- Engine type: Turbo-shaft
- Airworthiness: Experimental, exhibition
- Airworthiness date: November 16, 2016
- Certificate issued: July 31, 2025
- Expires: July 31, 2032
- Mode S code: A086C2
- Registered owner: [Red Bull North America Inc](https://openairdocs.org/faa-owner/RED%20BULL%20NORTH%20AMERICA%20INC)
- Location: [Camarillo, CA](https://openairdocs.org/faa-place/CA/Camarillo)
- Owner type: Non-citizen corporation
- Owner's area on the map: 34.2279° N, 119.0796° W: Placed by OpenAirDocs at the center of ZIP code 93010, within about 3 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=133EH
- Page: https://openairdocs.org/aircraft/N133EH

From the FAA registry file of October 24, 2026. ADs below are matched by the registry's airframe and engine model codes. They may apply; each AD's applicability can narrow it by serial number, part number or installed equipment. This is not a compliance determination.

## ADs that may apply (OpenAirDocs): 17 in force

### Matched by airframe (MBB BO105 CBS4)

None in force.

### Matched by engine (Rolls-Royce 250-C20B)

- [AD 2022-10-06](https://openairdocs.org/ad/2022-10-06): Turbine Section · Rolls-Royce 250-C20, 250-C20B, 250-C20C (T63-A-720) and 9 more. Effective Jun 28, 2022
- [AD 2018-13-01](https://openairdocs.org/ad/2018-13-01): Turbine Governor · Rolls-Royce 250-C10 (T63-A-5), 250-C18, 250-C18A and 24 more. Effective Aug 16, 2018
- [AD 2006-16-04](https://openairdocs.org/ad/2006-16-04): Inspection of the fuel nozzle screen · Rolls-Royce 250-B15A, 250-B15E, 250-B15G and 43 more. Effective Sep 7, 2006
- [AD 2006-13-06](https://openairdocs.org/ad/2006-13-06): Gas producer rotor assembly tie bolts · Rolls-Royce 250-B17, 250-B17B, 250-B17C and 16 more. Effective Jul 26, 2006
- [AD 2005-10-13](https://openairdocs.org/ad/2005-10-13): Turbine energy absorbing ring · Rolls-Royce 250-B17B, 250-B17C, 250-B17D and 7 more. Effective Jun 22, 2005
- [AD 2004-26-09](https://openairdocs.org/ad/2004-26-09): Compressor Adaptor Couplings · Rolls-Royce 250-B17, 250-B17B, 250-B17C and 8 more. Effective Feb 8, 2005
- [AD 2001-24-12](https://openairdocs.org/ad/2001-24-12): Helical Torquemeter Gearshaft Assembly · Rolls-Royce 250-B17, 250-B17C, 250-B17D and 13 more. Effective Dec 19, 2001
- [AD 98-24-28](https://openairdocs.org/ad/98-24-28): Main Fuel Control Bellows · Rolls-Royce 250-B15A, 250-B15E, 250-B15G and 36 more. Effective Jan 7, 1999
- [AD 96-19-01](https://openairdocs.org/ad/96-19-01): Superior Air Parts Manufacture Approval (PMA) Bearings · Rolls-Royce 250-B15G, 250-B17F, 250-B17F/1 and 17 more. Effective Sep 26, 1996
- [AD 88-17-01](https://openairdocs.org/ad/88-17-01): Fuel Controls · Rolls-Royce 250-B17, 250-B17B, 250-B17C and 26 more. Effective Mar 1, 1989
- [AD 83-03-02 R1](https://openairdocs.org/ad/83-03-02-R1): Slotted Third Stage Turbine Wheels · Rolls-Royce 250-B17, 250-B17B, 250-B17C and 5 more. Effective Feb 28, 1984
- [AD 82-24-05](https://openairdocs.org/ad/82-24-05): Control Assembly and Power Turbine Governor Assembly · Rolls-Royce 250-B15A, 250-B15E, 250-B15G and 43 more. Effective Nov 26, 1982
- [AD 82-13-03](https://openairdocs.org/ad/82-13-03): Modify Engine High Pressure Fuel Control Filter Assembly · Rolls-Royce 250-C20 and 250-C20B. Effective Jul 1, 1982
- [AD 79-21-01 R1](https://openairdocs.org/ad/79-21-01-R1): Third Stage Turbine Wheel Blade · Rolls-Royce 250-B17, 250-B17B, 250-B17C and 3 more. Effective Jun 3, 1981
- [AD 78-14-08](https://openairdocs.org/ad/78-14-08): Fuel Pump Drive Spline · Rolls-Royce 250-C18, 250-C18A, 250-C18B and 3 more. Effective Oct 24, 1979
- [AD 77-15-12](https://openairdocs.org/ad/77-15-12): Power Turbine Coupling Nut · Rolls-Royce 250-B15A, 250-B15E, 250-B15G and 23 more. Effective Sep 23, 1977
- [AD 77-09-08](https://openairdocs.org/ad/77-09-08): Bleed Valve Diaphragm · Rolls-Royce 250-B17, 250-B17B, 250-C20 and 2 more. Effective Jul 18, 1977

### Historical (superseded or no longer in force)

- [AD 2017-18-14](https://openairdocs.org/ad/2017-18-14) (historical): Turbine Section · Rolls-Royce 250-C20, 250-C20B, 250-C20F and 8 more. Effective Oct 13, 2017
- [AD 2015-02-22](https://openairdocs.org/ad/2015-02-22) (historical): Repetitive visual inspections · Rolls-Royce 250-B17, 250-B17B, 250-B17C and 15 more. Effective Mar 9, 2015
- [AD 2012-14-06](https://openairdocs.org/ad/2012-14-06) (historical): Released turbine blades and shrouds · Rolls-Royce 250-C20, 250-C20B and 250-C20R/2. Effective Aug 14, 2012
- [AD 2004-24-09](https://openairdocs.org/ad/2004-24-09) (historical): Fuel nozzle · Rolls-Royce 250-B15A, 250-B15E, 250-B15G and 40 more. Effective Jan 5, 2005
- [AD 2001-20-51](https://openairdocs.org/ad/2001-20-51) (historical): Helical Torquemeter Gearshaft Assembly · 250-B17, 250-B17C, 250-B17D and 12 more

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N133EH.

## 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.

- [Incident 19910911051589I](https://openairdocs.org/incident/19910911051589I), Sep 11, 1991: Bolkms BO105S (N133EH), Lake Charles, LA, Minor damage. Open door separated from aircraft on an aerial photography flight. Nut had backed off of the forward door slider.

## Service difficulty reports (21)

As reported by operators and repair stations. Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.

- [SDR ERAA098179](https://openairdocs.org/sdr/ERAA098179), Aug 11, 2004: GOVERNOR. SPLIT. 10 PERCENT TORQUE SPLIT WHEN ADJUSTED ALL THE WAY UP, LADDER GOVERNOR DROPS OUT OF SERVICE LIMITS. OVERHAULED IAW HONEYWELL OHM FORM 15 1095A.
- [SDR ERAA097526](https://openairdocs.org/sdr/ERAA097526), Aug 9, 2004: FLOAT. LEAKING. CYLINDER LEAKING. CYLINDER SQUIB VALVE ASSY TO BE LEAKING. REMOVED SQUIB VALVE/MANIFOLD ASSY FROM CYLINDER. REMOVED AND REPLACED O-RING AND BACK UP RING. VALVE 
- [SDR ERAA097507](https://openairdocs.org/sdr/ERAA097507), Jul 14, 2004: COMPRESSOR. CRACKED. CRACKED AND FOD ON IMPELLER VANES. OVERHAULED COMPRESSOR, COMPLIED WITH CEB A-1392 ADAPTER COUPLING.
- [SDR ERAA097093](https://openairdocs.org/sdr/ERAA097093), Jul 14, 2004: ENGINE. FOD. ENGINE HAS HARD CLUTCH ENGAGEMENT. GEARBOX PILOT BORE DELAMINATED, COMPRESSOR FOD. INSPECTED ENGINE ASSY IAW RR OMM CH 72-00-00 PARA I.D. (4). INSTALLED SERVICE
- [SDR ERAA096641](https://openairdocs.org/sdr/ERAA096641), Jul 14, 2004: SHIM. MISSING. GOVERNOR HAS ONLY 178.4 HOURS SINCE OVERHAUL AT ACRO. SHIMS ARE MISSING ON DRIVESHAFT. RETURNING ON ERA REPAIR ORDER RW-899866 REQUESTING WARRANTY REPAIR.
- [SDR ERAA098195](https://openairdocs.org/sdr/ERAA098195), Jun 22, 2004: TRANSMITTER. CRACKED. FUEL PROBE FLOAT STICKS. FOUND CASE CRACKED. REPLACED CASE ASSY. UNIT THEN FUNCTIONALLY TESTED GOOD.
- [SDR ERAA097105](https://openairdocs.org/sdr/ERAA097105), May 24, 2004: ROTOR HEAD. LEAKING. LEAKING INBOARD SEAL. SEALS WORN, WEAR RINGS GROOVED, FLAT WASHERS WARPED. DISASSEMBLED TO FACILITATE INBOARD SEAL REPLACEMENT. VISUALLY INSPECTED AND FOUND SLI
- [SDR ERAA097505](https://openairdocs.org/sdr/ERAA097505), Mar 30, 2004: GOVERNOR. BINDING. GOVERNOR HAS BINDING ARM. UNABLE TO TEST AS RECEIVED DUE TO SEIZED THROTTLE. BUSHING SEIZED, INTERNAL BEARINGS FOUND ROUGH/DRY. REPAIRED AND TESTED IAW HONEYWEL
- [SDR ERAA086448](https://openairdocs.org/sdr/ERAA086448), Apr 25, 2003: BLEED VALVE. FAILED. BLEED VALVE / COMPRESSOR STALL : OVERHAULED BLEED VALVE CHANGED NECESSARY PARTS..
- [SDR ERAA077292](https://openairdocs.org/sdr/ERAA077292), Nov 15, 2001: BEARING. FAILED. BEARING ROLLER FALLS OUT OF CAGE.
- [SDR ERAA074830](https://openairdocs.org/sdr/ERAA074830), Jul 30, 2001: SQUIB VALVE. CORRODED. SQUIB VALVE CORRODED. VALVE BODY IS BULGING (OR PERTRUDING) AS INDICATED ON VALVE. CORRECTIVE ACTION: SQUIB VALVE REMOVED FROM AIRCRAFT AND TAGGED AS UNSERVICEA
- [SDR ERAA065409](https://openairdocs.org/sdr/ERAA065409), Nov 10, 1999: BEARING. FAILED. ENGINE MAKING METAL; 2 1/2 BEARING FAILED, MINOR FOD 1ST STAGE COMPRESSOR.
- [SDR ERAA065407](https://openairdocs.org/sdr/ERAA065407), Nov 10, 1999: ENGINE. MAKING METAL. ENGINE MAKING METAL (2 1/2 BEARING FAILURE)
- [SDR ERAA064362](https://openairdocs.org/sdr/ERAA064362), Sep 9, 1999: CASE HALF. DELAMINATING. CASE HALF OVERHAULED 7/98. CASE HAS 326.3 HOURS SINCE O/H AND PLASTIC IS DELAMINATING ON SIDE.
- [SDR ERAA062369](https://openairdocs.org/sdr/ERAA062369), Apr 20, 1999: BEVEL GEAR SET. MAKING METAL. TRANSMISSION MAKING METAL. GEAR SET BREAKING DOWN.
- [SDR ERAA96247](https://openairdocs.org/sdr/ERAA96247), Jun 14, 1996: GOVERNOR. MALFUNCTION. GOVERNOR CAUSES TORQUE SPLIT 12% ON TAKEOFF AND CRUISE. GOVERNOR WAS OVERHAULED 9-18-96.
- [SDR ERAA96232](https://openairdocs.org/sdr/ERAA96232), May 3, 1996: BEARING. MAKING METAL. BEARING WITH 16.7 HRS ROUGH, GEARBOX MAKING METAL.
- [SDR ERAA96206](https://openairdocs.org/sdr/ERAA96206), Mar 1, 1996: ROLLER BEARING. MAKING METAL. GEARBOX MAKING METAL. ROLLERS ARE ROUGH, METAL CHIPS FOUND ON ROLLERS.
- [SDR ERAA96204](https://openairdocs.org/sdr/ERAA96204), Feb 26, 1996: ROLLER BEARING. MAKING METAL. GEARBOX MAKING METAL. INNER RACE HAS DAMAGE THAT CAN BE FELT WITH A PROBE.
- [SDR ERAA96203](https://openairdocs.org/sdr/ERAA96203), Feb 26, 1996: ROLLER BEARING. MAKING METAL. NEW BEARING THAT HAS PITTING ON OUTER RACE, GEARBOX MAKING METAL.
- [SDR ERAA96202](https://openairdocs.org/sdr/ERAA96202), Feb 26, 1996: BEARING. MAKING METAL. GEARBOX MAKING METAL, OUTER RACE HAS PITS, ROLLERS ARE ROUGH.

## STCs that may be installed (OpenAirDocs) (7)

Approved for this aircraft's airframe or engine model, in force first, then newest. The registry doesn't record which STCs an aircraft has; its records do.

### Approved for the engine (Rolls-Royce 250-C20B)

- [STC SE5511NM](https://openairdocs.org/stc/SE5511NM): Installation of compressor discharge pressue (PC) valve. Bell Helicopter Textron Inc
- [STC SE769NW](https://openairdocs.org/stc/SE769NW): Installation of Soloy Part No. 250-1001-1 fuel line. Siam Hiller Holdings Inc
- [STC SE00014EN](https://openairdocs.org/stc/SE00014EN): Installation of the Pratt & Whitney Engine Services, Inc. CrossCheck Engine Monitor Kit P/N HUMS-K-071-1, Rev. A on the specified PT6A engine models and kit P/N HUMS-K-071-2 on the specified A250 engine models. Pratt & Whitney Engine Services Inc
- [STC SE00027EN](https://openairdocs.org/stc/SE00027EN): Installation of Pratt & Whitney Engine Services Inc. Intellistart plus electronic control unit (ECU), P/N DPU-K-010 on the specified 250 engine models. Pratt & Whitney Engine Services Inc
- [STC SE492GL](https://openairdocs.org/stc/SE492GL): Incorporation of a fuel flow transducer. Shadin Avionics
- [STC ST00037AT](https://openairdocs.org/stc/ST00037AT): Unison igniter plugs, P/N 9044400-1. Unison Industries
- [STC SQ00338AT](https://openairdocs.org/stc/SQ00338AT): Unison igniter leads, P/N9048222-101, 102, 103, 104, 105, 106. Unison Industries

## Related

- Other MBB BO105 CBS4 aircraft: https://openairdocs.org/model/mbb-bo105-cbs4/aircraft.md
- The Rolls-Royce 250-C20B engine: https://openairdocs.org/engine/rolls-royce-250-c20b.md

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