# Bell Textron 525 - Type: Aircraft model (FAA registry) - Registry code: 1181935 - Manufacturer (registry): BELL TEXTRON INC - Model: 525 - Aircraft type: Rotorcraft - Category: Rotorcraft - Engines: 2 · Turbo-shaft - Seats: 18 - Weight class: Up to 12,499 lb - Certification: Not type certificated - Registered aircraft: 4 - Page: https://openairdocs.org/model/bell-textron-525 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 (4) - [N5251](https://openairdocs.org/aircraft/N5251): [Bell Textron Inc](https://openairdocs.org/faa-owner/BELL%20TEXTRON%20INC), [Fort Worth, TX](https://openairdocs.org/faa-place/TX/Fort%20Worth), S/N 62016 - [N5257](https://openairdocs.org/aircraft/N5257): [Bell Textron Inc](https://openairdocs.org/faa-owner/BELL%20TEXTRON%20INC), [Fort Worth, TX](https://openairdocs.org/faa-place/TX/Fort%20Worth), S/N 62017 - [N5258](https://openairdocs.org/aircraft/N5258): [Bell Textron Inc](https://openairdocs.org/faa-owner/BELL%20TEXTRON%20INC), [Fort Worth, TX](https://openairdocs.org/faa-place/TX/Fort%20Worth), S/N 62018 - [N5259](https://openairdocs.org/aircraft/N5259): [Bell Textron Inc](https://openairdocs.org/faa-owner/BELL%20TEXTRON%20INC), [Fort Worth, TX](https://openairdocs.org/faa-place/TX/Fort%20Worth), S/N 62019 ## NTSB investigations None matched to aircraft with this model. ## FAA accident and incident reports None matched to aircraft with this model. ## Service difficulty reports (260, newest 50) As reported by operators and repair stations, by the model named in the report. - [SDR WI5R2026092400001](https://openairdocs.org/sdr/WI5R2026092400001), Sep 24, 2026: COMPRESSOR. DAMAGED. WILLIAMS INTERNATIONAL ENGINE MODEL FJ44-1A, ENGINE SERIAL NUMBER 1086, FROM AIRCRAFT 525-0040 (N19DP) WAS RETURNED TO OUR REPAIR STATION FOR UNSCHEDULED REPAIR - [SDR 2026FA0000650](https://openairdocs.org/sdr/2026FA0000650), Aug 18, 2026: CONTROL VALVE. FAULTED. AIRCRAFT EXPERIENCED AN AIR DUCT OVERHEAT. - [SDR WI5R2026070800001](https://openairdocs.org/sdr/WI5R2026070800001), Jul 7, 2026: COMPRESSOR. DAMAGED. WILLIAMS INTERNATIONAL ENGINE MODEL FJ44-1AP, ENGINE SERIAL NUMBER 290520, FROM AIRCRAFT 525M2-1057 (SE-RVZ), WAS RETURNED TO OUR REPAIR STATION FOR UNSCHEDULED - [SDR 2026FA0000581](https://openairdocs.org/sdr/2026FA0000581), Jun 19, 2026: CONTROL CABLE. BINDING. LH ENGINE THROTTLE CONTROL STIFF / BINDING. - [SDR 2026FA0000213](https://openairdocs.org/sdr/2026FA0000213), Mar 25, 2026: COMPRESSOR. DAMAGED. ENGINE WAS RETURNED TO OUR REPAIR STATION FOR UNSCHEDULED REPAIR. FLIGHT CREW REPORTED HEARING AN “ABNORMAL NOISE” DURING FLIGHT; HOWEVER, ALL ENGINE PARAMETERS - [SDR 2026FA0000197](https://openairdocs.org/sdr/2026FA0000197), Mar 19, 2026: COMPRESSOR. DAMAGED. ENGINE WAS RETURNED TO OUR REPAIR STATION FOR UNSCHEDULED REPAIR. DURING AN AIRCRAFT PRE-BUY INSPECTION BEING PERFORMED BY AN AIRCRAFT SERVICE CENTER, EVIDENCE - [SDR 2026FA0000061](https://openairdocs.org/sdr/2026FA0000061), Jan 25, 2026: PUMP. FAILED. THE AIRCRAFT LANDED ON RUNWAY 20R AT KSNA UNDER VISUAL METEOROLOGICAL CONDITIONS. NORMAL BRAKING WAS AVAILABLE DURING THE LANDING ROLL USING THE PRIMARY HYDRAUL - [SDR 2025FA0000398](https://openairdocs.org/sdr/2025FA0000398), Apr 17, 2025: AVIONICS UNIT. WARNING LIGHT. CESSNA CITATION CE525 WITH GARMIN G3000 AVIONICS PACKAGE. AIRCRAFT DEPARTED SLC FOR FFZ. THE NAV DATA CYCLE RENEWED ON APRIL 17 BUT WAS AVAILABLE FOR DOWNLOAD 5 - [SDR 2025F00096](https://openairdocs.org/sdr/2025F00096), Apr 17, 2025: BULB. BURNED OUT. UPON EXTENDING LANDING GEAR, PILOT OBSERVES NEGATIVE LEFT GEAR DOWN LOCK INDICATION. PILOT PERFORMS CURSORY TROUBLESHOOTING TECHNIQUES BUT COULD NOT VERIFY LEFT - [SDR F27A202501230024](https://openairdocs.org/sdr/F27A202501230024), Jan 21, 2025: SCUPPER. LEAKING. AFTER TAKEOFF FROM KPDK, A PUFF OF SMOKE CAME FROM THE CENTER AREA OF THE INSTRUMENT PANEL. THE CREW CIRCLED BACK AROUND AND LANDED KPDK. MAINTENANCE IS STILL I - [SDR 2025FA0000049](https://openairdocs.org/sdr/2025FA0000049), Jan 21, 2025: COMPRESSOR. DAMAGED. WILLIAMS INTERNATIONAL ENGINE MODEL FJ44-1AP, SERIAL NUMBER 290348, FROM AIRCRAFT 525M2-0971 (N971MB), WAS RETURNED TO OUR REPAIR STATION FOR UNSCHEDULED REPAIR - [SDR 2025FA0000048](https://openairdocs.org/sdr/2025FA0000048), Jan 21, 2025: COMPRESSOR. DAMAGED. WILLIAMS INTERNATIONAL ENGINE MODEL FJ44-1A, SERIAL NUMBER 1738, FROM AIRCRAFT 525-0365 (N651CJ), WAS RETURNED TO OUR REPAIR STATION FOR UNSCHEDULED REPAIR. AIR - [SDR 2024FA0000941](https://openairdocs.org/sdr/2024FA0000941), Dec 5, 2024: ACTUATOR. FAILED. LH SPEED BRAKE ACTUATOR RUPTURED CAUSING A LOSS OF HYDRAULIC FLUID AND PRESSURE. THE LANDING GEAR HAD TO BE EXTENDED IN EMERGENCY MODE. THE AIRCRAFT LANDED SAFE - [SDR WI5R2024092300729](https://openairdocs.org/sdr/WI5R2024092300729), Sep 23, 2024: COMPRESSOR. DAMAGED. ENGINE WAS RETURNED TO OUR REPAIR STATION FOR UNSCHEDULED REPAIR. A SERVICE CENTER LOCATED IN GERMANY RELAYED A COMPLAINT FROM THE AIRCRAFT OPERATOR TO THE ENGI - [SDR 2024FA0000722](https://openairdocs.org/sdr/2024FA0000722), Sep 18, 2024: SPINNER. DAMAGED. THE NUMBER #1 ENGINE SPINNER P.N. 122358 BREAKING AND SEPARATING IN FLIGHT RESULTING WITH ENGINE INGESTING THE BROKEN PIECES AND RESULTING WITH A HOLE IN THE AI - [SDR 2024FA0000447](https://openairdocs.org/sdr/2024FA0000447), Jun 13, 2024: COMPRESSOR. DAMAGED. ENGINE WAS RETURNED TO OUR REPAIR STATION FOR UNSCHEDULED REPAIR. THE ENGINE OEM PROVIDED A REPORT FROM THE AIRCRAFT OPERATOR STATING “AFTER CLIMB-OUT FOLLOWING - [SDR 2024FA0000202](https://openairdocs.org/sdr/2024FA0000202), Mar 4, 2024: BUSHING. MISSING. ON DEPARTURE FROM KSGH, I FLEW THE AIRCRAFT WITHOUT THE USE OF THE AUTOPILOT AND MANUALLY TRIED TO ADJUST THE TRIM, BUT IT WOULD BARELY MOVE, SO I LEFT IT IN PL - [SDR 2023FA0000813](https://openairdocs.org/sdr/2023FA0000813), Dec 3, 2023: THROTTLE CABLE. FRACTURED. AFTER ENGINE SHUTDOWN, WHITE SMOKE(FUEL VAPOUR) ERUPTED FROM EXHAUST NOZZLE. TECHNICIAN NOTICED IT AND MADE A TEST RUN, FOUND THAT FIRE OUT OF EXAUST NOZZLE AND - [SDR 2023F00304](https://openairdocs.org/sdr/2023F00304), Sep 25, 2023: CAM. HUNG UP. NOSE BAGGAGE DOOR NOT LOCKED LIGHT CAME ON IN TURBULENCE ON FINAL AFTER EXTENDING GEAR. NORMAL APPROACH AND LANDING CONTINUED. LOCK CAM THAT MAKES CONTACT WITH - [SDR 3WTR20230918](https://openairdocs.org/sdr/3WTR20230918), Sep 18, 2023: CLEVIS BOLT. UNKNOWN. ELEVATOR HORN TO PUSHROD CLEVIS BOLT INSTALLED BACKWARDS CAUSING INTERFERENCE WITH STABILIZER CAP WHEN ELEVATOR MOVED FULL DEFLECTION DURING FUNCTIONAL CHECK. D - [SDR 2023F00275](https://openairdocs.org/sdr/2023F00275), Sep 6, 2023: MAGNETIC SEAL. DEFECTIVE. AS THE AIRCRAFT WAS PASSING THROUGH 24,000 FEET, I NOTICED THE OIL PRESSURE ON THE RIGHT ENGINE WAS STARTING TO DECREASE AT A NOTICEABLE RATE. I INFORMED FT WOR - [SDR 2025F00014](https://openairdocs.org/sdr/2025F00014), Aug 18, 2023: CONTROL CABLE. WORN. FOUND RIGHT WING AILERON INTERCONNECT CONTROL CABLE EXCESSIVELY WORN DUE TO RUBBING ON FAIRLEADS THROUGHOUT AIRCRAFT. VERIFIED PROPER CABLE ROUTING AND RIGGING. - [SDR 2025FA0000007](https://openairdocs.org/sdr/2025FA0000007), Aug 18, 2023: CONTROL CABLE. WORN. FOUND LEFT WING AILERON INTERCONNECT CONTROL CABLE EXCESSIVELY WORN DUE TO RUBBING ON FAIRLEADS THROUGHOUT AIRCRAFT. VERIFIED PROPER CABLE ROUTING AND RIGGING. - [SDR 2025F00012](https://openairdocs.org/sdr/2025F00012), Aug 18, 2023: CONTROL CABLE. WORN. FOUND RIGHT WING AILERON FORWARD CONTROL CABLE EXCESSIVELY WORN DUE TO RUBBING ON FAIRLEADS THROUGHOUT AIRCRAFT. VERIFIED PROPER CABLE ROUTING AND RIGGING. CABL - [SDR 2025F00011](https://openairdocs.org/sdr/2025F00011), Aug 18, 2023: CONTROL CABLE. WORN. FOUND LEFT WING AILERON FORWARD CONTROL CABLE EXCESSIVELY WORN DUE TO RUBBING ON FAIRLEADS THROUGHOUT AIRCRAFT. VERIFIED PROPER CABLE ROUTING AND RIGGING. CABLE - [SDR 2023FA0000621](https://openairdocs.org/sdr/2023FA0000621), May 11, 2023: SERVO. MISINSTALLED. OU RING ON INSPECTION, TNO GARMIN GSM 86 ELEVATOR AUTOPILOT SORVO GEAR OOX CABLES WE,E FOUND 10 BE ROUTED INCORRCCUY WILH THO CABLES BEHIND LHE GUARD PINS AT TH - [SDR 2022F00146](https://openairdocs.org/sdr/2022F00146), Mar 19, 2022: NONE. NONE. WHILE ON CLIMB OUT FROM KGSO, THE "HYDRAULIC PRESSURE" (WHITE) LIGHT ILLUMINATED. WE CLIMBED TO ALTITUDE, AND PER THE CHECKLIST, CYCLED THE LAST USED HYDRAULIC - [SDR 2022FA0000119](https://openairdocs.org/sdr/2022FA0000119), Feb 18, 2022: FUEL LINE. CRACKED. AS TOLD BY MAINTENANCE TECHNICIAN JEFF SHAW: CREW REPORTED THE ENGINE HAD GENERATOR FAIL WITH VIBRATION FOLLOWED BY ENGINE POWER ROLLBACK. INITIAL INSPECTION AF - [SDR 2022FA0000115](https://openairdocs.org/sdr/2022FA0000115), Feb 18, 2022: BEARING. FAILED. AS TOLD BY MAINTENANCE TECHNICIAN JEFF SHAW: CREW REPORTED THE ENGINE HAD GENERATOR FAIL WITH VIBRATION FOLLOWED BY ENGINE POWER ROLLBACK. INITIAL INSPECTION AF - [SDR 2022FA0000077](https://openairdocs.org/sdr/2022FA0000077), Feb 3, 2022: FUEL FILTER. WITHIN LIMITS. PLANE WAS RELOCATING FROM HND TO CRQ, DURING TAKE OFF PHASE CREW NOTICED THE FUEL FILTER BYPASS LIGHT CAME ON THE RIGHT ENGINE. CREW ABORTED THE TAKE OFF & TAXI - [SDR 2021FA0000334](https://openairdocs.org/sdr/2021FA0000334), Nov 23, 2021: CARBON SEAL. LEAKING. DURING CLIMB SMOKE WAS EVIDENT IN THE CABIN AND COCKPIT. THE PILOTS TURNED AIRCRAFT AND RETURNED TO BASE, AND LANDED WITHOUT INCIDENT. TROUBLESHOOTING REVEALED - [SDR 2021FA0000208](https://openairdocs.org/sdr/2021FA0000208), Jul 13, 2021: BELLCRANK. BROKEN. R/H ATTENUATOR BELCRANK (CASTING) FAILED AT CENTER PIVOT FRAME RENDERING THE ATTENUATOR DOOR INOP AND AND GIVING AN UNSAFE ANNUNCIATOR LIGHT WHICH ALLOWED HYDRA - [SDR 2021F00073](https://openairdocs.org/sdr/2021F00073), Apr 15, 2021: HOSE. RUPTURED. DURING POST FLIGHT INSPECTION BY PILOT LARGE AMOUNT OF HYDRAULIC FLUID VISIBLE ON BOTTOM OF FUSELAGE AND LEFT PYLON. PILOT ALSO REPORTED HYDRAULIC SYSTEM RESERV - [SDR 7SJA2021031750001](https://openairdocs.org/sdr/7SJA2021031750001), Mar 17, 2021: RIB. CRACKED. AFT FUSELAGE RIB P/N 500-06193-001 WAS FOUND CRACKED THROUGH DURING A 120 MONTH INSPECTION ITEM Z320-002 TASK CODE 05-43-00-210-804-A/600. - [SDR KBAA202103050001](https://openairdocs.org/sdr/KBAA202103050001), Mar 3, 2021: FDU. FAILED. DESCRIPTION FROM THE PIC. WHILE DESCENDING THROUGH 320 I INCREASED THE RATE OF DESCENT FROM 1000 FPM TO 3000 FPM AS I PULLED THE THROTTLES TO AN IDLE THE NO 1 E - [SDR DIXA20221201](https://openairdocs.org/sdr/DIXA20221201), Dec 9, 2020: ENGINE. LOW PRESSURE. AIRCRAFT DEPARTED KADS TODAY, AT FL300 CREW NOTICED RH ENGINE OIL PRESSURE WAS DROPPING, CREW ELECTED TO SHUTDOWN ENGINE AS A PRECAUTION, CREW DECLARED AN EMERG - [SDR WI5R2020111900002](https://openairdocs.org/sdr/WI5R2020111900002), Nov 19, 2020: ROTOR. DAMAGED. FLIGHT CREW REPORTED HEARING A "RUMBLING" NOISE ACCOMPANIED BY VIBRATION DURING DESCENT FROM FL280. FOLLOWING AN UNEVENTFUL LANDING, POST-FLIGHT INSPECTION REVE - [SDR 2020FA0000453](https://openairdocs.org/sdr/2020FA0000453), Oct 22, 2020: COMPRESSOR. FAILED. LEFT ENGINE VIBRATION AND RUMBLE ON APPROACH AT 28,000. ENGINE FAN IS STIFF TO ROTATE BY HAND. CONTACTED WILLIAMS INTERNATIONAL AND STARTED CASE NR 201015-00009 - [SDR B90A20200617001](https://openairdocs.org/sdr/B90A20200617001), Jun 12, 2020: GARLOCK SEAL. DAMAGED. CLIMBING THROUGH APPROXIMATELY 7,000 FEET WHEN THE OIL PRESSURE DROPPED SIGNIFICANTLY AND WAS IMMEDIATELY FOLLOWED BY A RED MASTER WARNING INDICATOR AND A MESSA - [SDR KBAA20200613001](https://openairdocs.org/sdr/KBAA20200613001), Jun 12, 2020: FUEL CONTROL. INTERMITTENT. STATEMENT FROM THE CREW. "WE EXPERIENCED A RIGHT ENGINE FAILURE IN FLIGHT. THE AIRCRAFT WAS JUST BEGINNING DESCENT FROM FL400, AND AS THE THROTTLE WERE BROUGHT - [SDR CNQD20200401001](https://openairdocs.org/sdr/CNQD20200401001), Mar 26, 2020: FDU. FAILED. OPERATOR EXPERIENCED A LEFT ENGINE UNCOMMANDED SHUTDOWN IN FLIGHT. LEFT ENGINE FUEL DELIVERY UNIT WAS REPLACED AS A RESULT. - [SDR 2HGR2020030301](https://openairdocs.org/sdr/2HGR2020030301), Mar 2, 2020: SWITCH. FAULTY. AFTER A NORMAL TAKEOFF FROM KCRQ HEADED TO KLAS, CREW NOTICED A LEFT SIDE “FUEL LOW LEVEL” CAUTION LIGHT ILLUMINATED AFTER CLIMBING. THE CREW JUST HAD FUEL IN T - [SDR WI5R2019101900018](https://openairdocs.org/sdr/WI5R2019101900018), Oct 16, 2019: BLADE. DAMAGED. DISASSEMBLY REVEALED HPC ROTOR LIBERATED THE OUTER TIP OF TWO MAIN BLADES ABOUT THE SIZE OF A THUMB NAIL. THE ROTOR IS NOT ORIGINAL TO THE ENGINE AND HAS 4886 H - [SDR 71AA20190913001](https://openairdocs.org/sdr/71AA20190913001), Sep 11, 2019: HYDRAULIC LINE. RUPTURED. AFTER TAKEOFF FROM KMOT, I COMPLETED THE AFTER TAKEOFF CHECKS AND WAS GIVEN A DIRECT COURSE TO MY FIRST WAYPOINT ON MY FLIGHT PLAN TO KBJC BY ATC. AFTER TURNING - [SDR 2HGR2019071701](https://openairdocs.org/sdr/2HGR2019071701), Jul 17, 2019: PRINTED CKT BOARD. INTERMITTENT. AIRCRAFT TOOK OFF FROM KCRQ TO KFAT, ON CLIMB CREW NOTICED "HYD PRESS" LIGHT ON, THEY PERFORMED CHECKLIST PROCEDURES TO RESET, THEY WERE UNABLE TO RESET. THEY R - [SDR 2020FA0000041](https://openairdocs.org/sdr/2020FA0000041), Jul 10, 2019: HINGE. CRACKED. INSTALLED $14,000.00 SB525-04-1 IMPROVEMENT KIT WHICH REPLACED OUT THE OLD DOOR ASSEMBLY ON THE LEFT AND RIGHT SIDES. AFTER ABOUT THREE HUNDRED HOURS OF OPERATI - [SDR 2HGR2019040201](https://openairdocs.org/sdr/2HGR2019040201), Mar 27, 2019: SWITCH. FALSE INDICATION. DURING TAKEOFF FROM SJC TO CRQ, CREW NOTICED A "DOOR UNLOCKED" LIGHT ON. TAKE OFF WAS REJECTED. CREW TAXI BACK TO FBO. CREW RECHECKED ALL DOORS & WARNING LIGHT - [SDR 2019FA0000025](https://openairdocs.org/sdr/2019FA0000025), Jan 18, 2019: DISPLAY. INTERMITTENT. DURING APPROACH, ALL THREE DISPLAYS (PFD 1, PFD 2, AND MFD) WENT BLANK FOR A FEW SECONDS. CREW FLEW WITH REFERENCE TO STANDBY INSTRUMENTS DURING THIS TIME. ALL - [SDR GAYA201808150001](https://openairdocs.org/sdr/GAYA201808150001), Aug 6, 2018: FUEL CAP. LOOSE. RIGHT FUEL CAP LEAKED DURING TAKEOFF ROLL DUE TO LOOSE TENSION. - [SDR WI5R2018043000001](https://openairdocs.org/sdr/WI5R2018043000001), Apr 30, 2018: ROTOR. FRACTURED. THE ENGINE WAS RETURNED TO THE REPAIR STATION FOR DAMAGE NOTED ON THE HPC ROTOR BLADES. THE DAMAGE WAS FOUND DURING A POST FLIGHT BORESCOPE INSPECTION FOR VIBRA All 260: https://openairdocs.org/model/bell-textron-525/reports.md ## The same model under other registry codes Amateur-built copies and renamed makers get their own codes. - [Cessna 525](https://openairdocs.org/model/cessna-525): 442 registered aircraft, registry code 2076601 - [Textron 525](https://openairdocs.org/model/textron-525): 222 registered aircraft, registry code 2076611 - [Cessna 525](https://openairdocs.org/model/cessna-525): 6 registered aircraft, registry code 2076653 - [Bell Helicopter Textron 525](https://openairdocs.org/model/bell-helicopter-textron-525): 3 registered aircraft, registry code 1182127 --- 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.