# N135EH: 1984 Messerschmitt-Boelkow-Blohm BO-105S, registration cancelled 2017-04-04 - Type: Cancelled registration (FAA registry, deregistered aircraft) - Cancelled: April 4, 2017 - Status when cancelled: Registration expired, pending cancellation - Airframe: [Messerschmitt-Boelkow-Blohm BO-105S](https://openairdocs.org/model/messerschmitt-boelkow-blohm-bo-105s) (registry code 5626006) - Engine: [Allison 250-C20 series](https://openairdocs.org/engine/allison-250-c20-series) (registry code 03020) - Data sheets: [TCDS H3EU](https://openairdocs.org/tcds/H3EU), [TCDS E4CE](https://openairdocs.org/tcds/E4CE) (OpenAirDocs) - Serial number: S-675 - Year built: 1984 - Type of aircraft: Rotorcraft - Engine type: Turbo-prop - Airworthiness: Standard, normal - Airworthiness date: August 23, 1984 - Certificate issued: May 17, 2005 - Last registry action: May 20, 2008 - Mode S code: A08E30 - Owner when cancelled: [Era Helicopters LLC](https://openairdocs.org/faa-owner/ERA%20HELICOPTERS%20LLC) - Location: [Lake Charles, LA](https://openairdocs.org/faa-place/LA/Lake%20Charles) - Owner type: Corporation - Owner's area on the map: 30.2266° N, 93.2174° W: Placed by OpenAirDocs: center of Lake Charles, LA, within about 4 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based - The mark today: https://openairdocs.org/aircraft/N135EH - FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=135EH - Page: https://openairdocs.org/deregistered/N135EH-2017-04-04 From the FAA registry file of November 3, 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 (24) Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. - [SDR ERAA097113](https://openairdocs.org/sdr/ERAA097113), Jun 27, 2004: CALIPER. DAMAGED. DISC RUBBING CALIPER ASSY. CLEANED, INSPECTED, AND REPAIRED. TESTED. - [SDR ERAA096616](https://openairdocs.org/sdr/ERAA096616), Jun 8, 2004: ELT. CRACKED. FOUND CRACKED ELT ASSY. SENT UNIT TO MANUFACTURER FOR REPAIR. - [SDR ERAA096631](https://openairdocs.org/sdr/ERAA096631), Jun 5, 2004: FLOAT. LEAKING. CYLINDER FOUND TO BE LEAKING NITROGEN FROM SQUIB VALVE. PERFORMED 6 MONTH FLOAT INSPECTION AND REPACK. REPAIRED LEAKING SQUIB VALVE BY REPLACING O-RING AND LEAT - [SDR ERAA097104](https://openairdocs.org/sdr/ERAA097104), May 24, 2004: BOLT. GALLED. BLADE BOLT GALLED SLIGHT GALLING ON BOTH BOLTS ACTION TAKEN. SCRAPPED BOTH PRIMARY BLADE BOLTS DUE TO GALLING BEYOND LIMITS IAW BO-105 MM CH 13. - [SDR ERAA096632](https://openairdocs.org/sdr/ERAA096632), Apr 29, 2004: OIL COOLER. MAKING METAL. OIL COOLER HAD METAL IN TRANSMISSION OIL FILTER CHANGE IAW BO105 MM. LEAKING IN CORE THE UNIT WAS CLEANED, FLUSHED, OVERHAULED, TESTED AND INSPECTED. UNIT PASSE - [SDR ERAA091802](https://openairdocs.org/sdr/ERAA091802), Nov 1, 2003: BEARING. FAILED. METAL ON BOTTOM PLUG. BROKEN NR 4 BEARING CAGE. INSTALLED SERVICEABLE GEARBOX. COMPLIED WITH E CHECK - [SDR ERAA093717](https://openairdocs.org/sdr/ERAA093717), Sep 27, 2003: GOVERNOR. INOPERATIVE. N2 DROPS OFF 10-12 PERCENT IN CRUISE FLIGHT AND VERY STIFF ARM. INTERNAL COMPONENTS VERY WORN FOR LOW TIME USED. POSSIBLE EXTERNAL VIBRATIONS. REPAIRED AND TEST - [SDR ERAA093705](https://openairdocs.org/sdr/ERAA093705), Aug 19, 2003: FCU. OUT OF ADJUST. FUEL CONTROL IDLES BELOW 59 PERCENT AND WILL NOT ADJUST UP. MAKING VALVE FUEL FLOW ON HOT SIDE, IDLE FOUND ADJUSTABLE, CUTOFF SHAFT LEAKING. A REPAIRED AND TEST - [SDR ERAA087107](https://openairdocs.org/sdr/ERAA087107), May 21, 2003: TRANSMITTER. ERRATIC. FUEL PROBE HAS ERRATIC INDICATION. REPLACED CASE ASSEMBLY AND TESTED. - [SDR ERAA087104](https://openairdocs.org/sdr/ERAA087104), May 21, 2003: ENGINE. MAKING METAL. ENGINE MAKING METAL. FOUND TURBINE MOUNT STUD ON LT SIDE OF GEARBOX LOOSE, MOVING. - [SDR ERAA087097](https://openairdocs.org/sdr/ERAA087097), May 20, 2003: GOVERNOR. STIFF. GOVERNOR HITS MAX STOP WITH MAX BEEP AND UP COLLECTIVE AND ARM VERY STIFF. HEAVY WEAR ON INTERNAL COMPONENTS MAY BE DUE TO EXTERNAL VIBRATION SOURCES. WORK SCOP - [SDR ERAA093691](https://openairdocs.org/sdr/ERAA093691), May 3, 2003: ROTOR HEAD. DAMAGED. INNER SLEEVE BUSHINGS DEBONDED. OB BUSHINGS 2 EA ON INNER SLEEVE CRACKED. BOTH RINGS IN BOTTOM OF GRIPS MECHANICALLY DAMAGED. IB INNER SLEEVE BUSHINGS WORN. TEE - [SDR ERAA086436](https://openairdocs.org/sdr/ERAA086436), Apr 24, 2003: GEARBOX. MAKING METAL. GEARBOX MAKING METAL. 2 1/2 BEARING FAILED. OVERHAULED GEARBOX. COMPLIED WITH CEB A-1211 MAG PLUG INSP, CEB-A-1340 REMOVE PINION GEAR, CEB-A-1351, REPLACE OIL T - [SDR ERAA097080](https://openairdocs.org/sdr/ERAA097080), Mar 26, 2003: ELT. CRACKED. SUB ASSEMBLY, TOP COVER CRACKED. REPLACE BATTERY, SUB ASSEMBLY, TOP COVER. TESTED IAW ARTEX PROCEDURES 4128,4129,4130. - [SDR ERAA081160](https://openairdocs.org/sdr/ERAA081160), Sep 26, 2002: FUEL CONTROL. MALFUNCTIONED. FUEL CONTROL CAUSES ROTOR DROOP, UNIT OVERHAULED IAW HONEYWELL OHM FOR 15 602E. - [SDR ERAA080479](https://openairdocs.org/sdr/ERAA080479), Jul 18, 2002: TURBINE WHEEL. DAMAGED. UNIT HAS LOW POWER. NR 4 NOZZLE AND NR 3 WHEEL CRACKED. INSTALLED NEW NR 3 & 4 WHEEL AND NEW NR 4 NOZZLE. C/W CEB-1360; RE-COAT INNER SHAFT. - [SDR ERAA079869](https://openairdocs.org/sdr/ERAA079869), May 2, 2002: GOVERNOR. WORN. CAUSES NR TO BLEED OFF AFTER BEEPED TO 100 PERCENT. COVERED BY SEVERE PREMATURE WEAR. EVIDENCE OF TORSIONAL RESONANCE CONDITION BETWEEN PTG DRIVE & GEAR BOX DRI - [SDR ERAA076665](https://openairdocs.org/sdr/ERAA076665), Oct 9, 2001: BLADE. DEBONDED. BLADE IS DEBONDING ON LEADING EDGE. POTTING NEEDS CHANGING. ALL ABRASI9ON STRIPS VOID SCARF JOINT, NR 1 ABRASION STRIP ERROSION NOSE AND NECK SHELL CRACKED AT F - [SDR ERAA076664](https://openairdocs.org/sdr/ERAA076664), Oct 9, 2001: BLADE. DEBONDED. BLADE IS DEBONDING ON LEADING EDGE. POTTING NEEDS CHANGING NOSE AND NECK SHELLS CRACKED @ NECK DOWN AREA, SKIN CRACK AND VOIDED @ NECK AREA, TEFLON MISSING FROM - [SDR ERAA076663](https://openairdocs.org/sdr/ERAA076663), Oct 5, 2001: BLADE. DEBONDED. M/R BLADE IS DEBONDED. LEADING EDGE DEBONDING, POTTING NEEDS CHANGING. ACTION TAKEN: ALL ABRASION STRIPS VOID, HEAVY ERROSION ON ABRASION STRIP, P.U. FILM DETER - [SDR ERAA96292](https://openairdocs.org/sdr/ERAA96292), Aug 16, 1996: NOZZLE. DEFECTIVE. #2 NOZZLE WAS OVERHAULED. ERA REC'D BACK AT ERA 7-18-96. SEAL BORE TOO LARGE. PROTRUSIONS ON THE INNER BAND, NEEDS TO BE REMOVED. - [SDR ERAA96286](https://openairdocs.org/sdr/ERAA96286), Jul 30, 1996: PT SUPPORT. DEFECTIVE. PT SUPPORT OVERHAULED 7-3-96. REAR SUMP COVER NOT SECURE TO SUPPORT. EVALUATE CRACKS ADJACENT TO 6 O'CLOCK STRUT. - [SDR ERAA96242](https://openairdocs.org/sdr/ERAA96242), May 17, 1996: WHEEL. BLADE STRETCH. WHEEL HAS 252.0 HRS ON IT AND HAS BLADE TIP STRETCH TO 6.197". - [SDR ERAA9576](https://openairdocs.org/sdr/ERAA9576), May 12, 1995: ADAPTER. PLATING FLAKING. NEW ADAPTER THAT HAS DAMAGED INTERNAL SPLINES, FLAKING SILVER PLATING. ## 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 19921214054719I](https://openairdocs.org/incident/19921214054719I), Dec 14, 1992: Bolkms BO105S (N135EH), Gulf Of Mexico, LA, Minor damage. NR1 engine lost torque. Single engine landing at oil platform. Engine drive shaft part failed. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.