# N724MB: Messerschmitt-Boelkow-Blohm BO-105S, registration cancelled 2001-03-12

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: March 12, 2001
- Exported to: Finland
- Status when cancelled: Triennial form not returned
- Airframe: [Messerschmitt-Boelkow-Blohm BO-105S](https://openairdocs.org/model/messerschmitt-boelkow-blohm-bo-105s) (registry code 5626006)
- Data sheets: [TCDS H3EU](https://openairdocs.org/tcds/H3EU) (OpenAirDocs)
- Serial number: S-756
- Type of aircraft: Rotorcraft
- Certificate issued: October 26, 1994
- Last registry action: November 14, 2000
- Mode S code: A9B37D
- Owner when cancelled: [Petroleum Helicopters Inc](https://openairdocs.org/faa-owner/PETROLEUM%20HELICOPTERS%20INC)
- Location: [Lafayette, LA](https://openairdocs.org/faa-place/LA/Lafayette)
- Owner type: Corporation
- Owner's area on the map: 30.1552° N, 92.0282° W: Placed by OpenAirDocs at the center of ZIP code 70508, within about 3 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N724MB
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=724MB
- Page: https://openairdocs.org/deregistered/N724MB-2001-03-12

From the FAA registry file of October 29, 2026, cancelled registrations. Owners' street addresses are left out. The Mode S code belongs to the N-number, not the airframe.

ADs and bulletins for the Messerschmitt-Boelkow-Blohm BO-105S: https://openairdocs.org/model/messerschmitt-boelkow-blohm-bo-105s.md

## Service difficulty reports (54, newest 50)

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

- [SDR HEEA063458](https://openairdocs.org/sdr/HEEA063458), Aug 12, 1999: TURBINE. SEIZED. TURBINE SEIZED.
- [SDR HEEA060452](https://openairdocs.org/sdr/HEEA060452), Jan 25, 1999: STARTER. MALFUNCTIONED. STARTER/GENERATOR NOISY AND ARCING.
- [SDR HEEA0016747](https://openairdocs.org/sdr/HEEA0016747), Nov 6, 1998: TRANSMITTER. INTERMITTENT. ELT SELF-ACTIVATES INTERMITTENTLY.
- [SDR HEEA0016722](https://openairdocs.org/sdr/HEEA0016722), Nov 6, 1998: INDICATOR. MALFUNCTIONED. INSTRUMENT INDICATION DROPS OFF TO ZERO.
- [SDR HEEA0016695](https://openairdocs.org/sdr/HEEA0016695), Nov 6, 1998: WARNING BOX. FAILED. RPM WARNING CAUSES TRIM CIRCUIT BREAKER TO TRIP.
- [SDR HEEA0016694](https://openairdocs.org/sdr/HEEA0016694), Nov 5, 1998: WARNING BOX. MALFUNCTIONED. RPM WARNING LIGHT COMING ON IN-FLIGHT.
- [SDR HEEA0016693](https://openairdocs.org/sdr/HEEA0016693), Nov 5, 1998: WARNING BOX. MALFUNCTIONED. RPM WARNING, AUDIO LIGHT CAME ON IN-FLIGHT.
- [SDR HEEA0016691](https://openairdocs.org/sdr/HEEA0016691), Nov 5, 1998: WARNING BOX. MALFUNCTIONED. RPM WARNING, LIGHT COMING ON AT 100 PERCENT.
- [SDR HEEA0016690](https://openairdocs.org/sdr/HEEA0016690), Nov 5, 1998: WARNING BOX. MALFUNCTIONED. RPM WARNING CAUSES AUDIO AND RPM LIGHT TO COME ON.
- [SDR HEEA0016688](https://openairdocs.org/sdr/HEEA0016688), Nov 5, 1998: WARNING BOX. MALFUNCTIONED. RPM WARNING, INTERMITTENT AUDIO AND LIGHT.
- [SDR HEEA0016684](https://openairdocs.org/sdr/HEEA0016684), Nov 5, 1998: WARNING BOX. MALFUNCTIONED. RPM AND AUDIO DOES NOT COME ON WHEN 12 PERCENT N1 SPLIT.
- [SDR HEEA0015051](https://openairdocs.org/sdr/HEEA0015051), Jun 30, 1998: ROTOR MAST. CORRODED. CORROSION IN BORES BEYOND LIMITS. REPLACED MAST ASSY.
- [SDR HEEA0015050](https://openairdocs.org/sdr/HEEA0015050), Jun 30, 1998: SUN GEAR. SPALLED. TRANSMISSION CAME IN DUE TO METAL IN OIL. REPLACED SUN GEAR.
- [SDR HEEA0014645](https://openairdocs.org/sdr/HEEA0014645), Jun 8, 1998: TORQUEMETER. INOPERATIVE. TORQUEMETER NR 2 NEEDLE STAYS AT ZERO WHILE RUNNING.
- [SDR HEEA0014507](https://openairdocs.org/sdr/HEEA0014507), Jun 4, 1998: TORQUEMETER. STICKS. TORQUEMETER NR 2 NEEDLE STICKING IN-FLIGHT.
- [SDR HEEA0013312](https://openairdocs.org/sdr/HEEA0013312), Mar 5, 1998: VALVE. FAILED. VALVE WILL NOT OPEN. INOPERATIVE.
- [SDR HEEA0012990](https://openairdocs.org/sdr/HEEA0012990), Feb 10, 1998: NOZZLE. CRACKED. ENGINE REMOVED DUE TO OIL STARVATION AND METAL IN OIL. UPON INSPECTION OF TURBINE PARTS NOTED: CRACKED BEYOND SERVICEABLE LIMITS ON NR1 NOZZLE TRAILING EDGE VAN
- [SDR HEEA0012867](https://openairdocs.org/sdr/HEEA0012867), Feb 6, 1998: INDICATOR. FAILED. TRIPLE INDICATOR ROTOR NEEDLE READS HIGH. UNIT OUT OF TOLERANCE.
- [SDR HEEA0012117](https://openairdocs.org/sdr/HEEA0012117), Nov 19, 1997: TRANSMISSION. SPALLED. TRANSMISSION BEVEL GEARS HAVE EXCESSIVE SPALLING ON S/N 2195 AND MINOR ON S/N 2310 T.T. 3392:45 (TOOTH FAILURE) PINION S/N 3142, T.T. 353:20 SPALLING ON TOOTH (
- [SDR HEEA0012070](https://openairdocs.org/sdr/HEEA0012070), Nov 19, 1997: RPM WARNING BOX. INTERMITTENT. RPM WARN BOX INTERMITTENT OPERATION.
- [SDR HEEA0011310](https://openairdocs.org/sdr/HEEA0011310), Oct 8, 1997: INDICATOR. STICKS. NEEDLE STICKS AND READS HIGH. SENT TO MASCO FOR INSPECTION AND REPAIR.
- [SDR HEEA0011309](https://openairdocs.org/sdr/HEEA0011309), Oct 8, 1997: INDICATOR. ERROR. TOT INDICATOR INCORRECT INDICATION. ERRATIC AND WILL NOT CALIBRATE. TIME SINCE REPAIR 36:50.
- [SDR HEEA0011266](https://openairdocs.org/sdr/HEEA0011266), Oct 8, 1997: INDICATOR. ERROR. NR 1 NEEDLE HAS EXCESSIVE FRICTION ERROR.
- [SDR HEEA0010998](https://openairdocs.org/sdr/HEEA0010998), Sep 10, 1997: TRANSMITTER. WONT TEST. TORQUE TRANSMITTER WILL NOT TEST PROPERLY.
- [SDR HEEA0010997](https://openairdocs.org/sdr/HEEA0010997), Sep 10, 1997: INDICATOR. WONT TEST. MAST MOMENT INDICATOR WONT TEST.
- [SDR HEEA0010596](https://openairdocs.org/sdr/HEEA0010596), Aug 6, 1997: TACH GENERATOR. SEIZED SHAFT. TACH GENERATOR DRIVE SHAFT FROZEN.
- [SDR HEEA0010237](https://openairdocs.org/sdr/HEEA0010237), Jun 25, 1997: BLADE. CRACKED. M/R BLADE NOSE AND NECK SHELLS CRACKED.
- [SDR HEEA0010186](https://openairdocs.org/sdr/HEEA0010186), Jun 19, 1997: FUEL CELL. CRACKED. FUEL CELL BLISTERS AND CRACKS AROUND FLANGES.
- [SDR HEEA0010095](https://openairdocs.org/sdr/HEEA0010095), Jun 12, 1997: SET SCREW RING. UNBONDED. RUBBER COLLAR NOT PROPERLY BONDED TO ALUMINUM RING.
- [SDR HEEA0010094](https://openairdocs.org/sdr/HEEA0010094), Jun 12, 1997: SET SCREW RING. UNBONDED. RUBBER COLLAR NOT PROPERLY BONDED TO ALUMINUM RING.
- [SDR HEEA0010093](https://openairdocs.org/sdr/HEEA0010093), Jun 12, 1997: SET SCREW RING. UNBONDED. RUBBER COLLAR NOT PROPERLY BONDED TO ALUMINUM RING.
- [SDR HEEA0010092](https://openairdocs.org/sdr/HEEA0010092), Jun 12, 1997: SET SCREW RING. UNBONDED. RUBBER COLLAR NOT PROPERLY BONDED TO ALUMINUM RING.
- [SDR HEEA0010077](https://openairdocs.org/sdr/HEEA0010077), Jun 11, 1997: BLADE. CRACKED. BLADE IS CRACKED. NOSE SHELL CRACKED.
- [SDR HEEA0010076](https://openairdocs.org/sdr/HEEA0010076), Jun 11, 1997: BLADE. CRACKED. BLADE IS CRACKED. NOSE AND NECK SHELLS CRACKED. THE TIP CAP IS ALSO UNBONDED.
- [SDR HAIHEEA9689](https://openairdocs.org/sdr/HAIHEEA9689), Apr 30, 1997: WARNING BOX. MALFUNCTION. RPM WARN COMES ON INTERMITTENTLY. TIME SINCE REPAIR 83:35.
- [SDR HAIHEEA9435](https://openairdocs.org/sdr/HAIHEEA9435), Apr 19, 1997: WARNING BOX. MALFUNCTION. RPM LIGHT FLASHES INTERMITTENTLY.
- [SDR HEEA979183](https://openairdocs.org/sdr/HEEA979183), Mar 12, 1997: BEARING. SPALLED. BEARING EXCESSIVE SPALLING. REPLACED WITH NEW BEARING.
- [SDR HEEA979091](https://openairdocs.org/sdr/HEEA979091), Feb 11, 1997: TRANSCEIVER. FAILED. TRANSCEIVER WILL NOT RECEIVE; SQUELCH STICKING.
- [SDR HEEA968810](https://openairdocs.org/sdr/HEEA968810), Dec 30, 1996: CLUTCH. FAIL INSP. FAILED 600 HOUR INSPECTION. INNER CAGE WORN BEYOND LIMITS. REPLACED WITH SERVICEABLE CLUTCH.
- [SDR HEEA968732](https://openairdocs.org/sdr/HEEA968732), Dec 13, 1996: FUEL PUMP. MALFUNCTION. FUEL PUMP FAULTY. ALSO CHANGED FILTER
- [SDR HEEA968387](https://openairdocs.org/sdr/HEEA968387), Oct 18, 1996: CASE HALVES. CRACKED. ENGINE REMOVED DUE TO METAL IN OIL. UPON INSPECTION OF COMPRESSOR PARTS NOTED: PLASTIC CRACKED AND LIFTING ON CASE ASSEMBLY. INSTALLED A DALLAS AIRMOTIVE OVERHA
- [SDR HEEA968362](https://openairdocs.org/sdr/HEEA968362), Oct 15, 1996: GYRO COMPASS. PRECESSES. GYRO COMPASS EXCESSIVE PRECESSION.
- [SDR HEEA967697](https://openairdocs.org/sdr/HEEA967697), Aug 29, 1996: TRANSCEIVER. DEFECTIVE. REPAIR CRACKED FACEPLATE. REPLACED BROKEN FACEPLATE ASSEMBLY. ALSO REPLACED WEAK V101 CAVITY OSCILLATOR BECAUSE OF LOW POWER OUT. ADJUSTED AS NEEDED. BENCH CHEC
- [SDR HEEA967639](https://openairdocs.org/sdr/HEEA967639), Aug 8, 1996: BLADE. CRACKED. M/R BLADE IS CRACKED. (NOSE AND NECK SHELL CRACKED AND SMALL AREAS OF SEPARATION ON THE LEADING EDGE STRIPS.
- [SDR HEEA966356](https://openairdocs.org/sdr/HEEA966356), Jan 4, 1996: CELL. LEAKING. AFT FUEL CELL LEAKING FUEL. INSTALLED SERVICEABLE FUEL CELL.
- [SDR HEEA955659](https://openairdocs.org/sdr/HEEA955659), Aug 31, 1995: STARTER. FAILED. PILOT TRIED TO START ENGINE (MAX RPM 13% N1) AND TOT CLIMBED MUCH HIGHER THAN NORMAL. ABORTED START AND TRIED TO START ENGINE AGAIN, ENGINE WOULD NOT SPIN. SHUT
- [SDR HEEA955629](https://openairdocs.org/sdr/HEEA955629), Aug 25, 1995: TRANSMITTER. DEFECTIVE. #1 ENGINE OIL PRESSURE NEEDLE INDICATES FULL SCALE. REPLACED WITH SERVICEABLE TRANSMITTER.
- [SDR HEEA955511](https://openairdocs.org/sdr/HEEA955511), Aug 2, 1995: REGULATOR. FAILED. PEGS VOLTAGE METER INDICATOR TO TOP END. FOUND Q4 TRANSISTOR BAD AND CIRCUIT BOARD BURNT AROUND R65 RESISTOR. SCRAPPED VOLTAGE REGULATOR.
- [SDR HEEA955307](https://openairdocs.org/sdr/HEEA955307), Jul 5, 1995: TRANSMITTER. FAILED. #1 ENGINE OIL PRESSURE INDICATOR PEGS ON HIGH SIDE IN FLIGHT. REPLACED #1 OIL PRESSURE TRANSMITTER AND RETURNED TO SERVICE.
- [SDR HEEA954882](https://openairdocs.org/sdr/HEEA954882), Apr 25, 1995: SHAFT. SCORED. SLIDING SLEEVE AREA SCORING AND CORROSION AT BEARING SEAT.

All 54: https://openairdocs.org/deregistered/N724MB-2001-03-12/reports.md

## Other aircraft with N724MB

- [Registered now](https://openairdocs.org/aircraft/N724MB): Brewton Mike R BREWTON RV-7A, S/N BREWTON-1

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