# Service difficulty reports: MD Helicopters MD 900

A list on [MD Helicopters MD 900](https://openairdocs.org/model/md-helicopters-md-900.md).

Newest first. General aviation reporting is voluntary.

Page 1 of 9 · 435 reports

- [SDR QMLA2025111620114](https://openairdocs.org/sdr/QMLA2025111620114.md): Blade · delaminated · Nov 15, 2025 · N902CH · Doug MD900 · Main Rotor Blades
  > TRIM TAB SECTION ON MRB NR 4 WAS DISCOVERED TO BE DELAMINATED ON POST FLIGHT WALK AROUND. REMOVED AND REPLACED MRB.
- [SDR QMLA2018092718104](https://openairdocs.org/sdr/QMLA2018092718104.md): Bolt · sheared · Sep 24, 2018 · N900UM · Doug MD900 · Main Rotor System
  > MR DRIVE RING BOLT FOUND TO BE SHEARED DURING ANNUAL INSPECTION OF MR HEAD AND DRIVE SYSTEM
- [SDR QMLA2018040718042](https://openairdocs.org/sdr/QMLA2018040718042.md): Warning Light · false activation · Apr 7, 2018 · N900UM · Doug MD900 · Main Rotor Gearbox
  > WHILE ENROUTE, THE TRANSMISSION CHIP LIGHT ILLUMINATED APPROXIMATEDLY FIFTEEN MINUTES INTO THE FLIGHT. STAYED ON FOR ABOUT 15 SECONDS BEFORE GOING OUT. CAME BACK AND OUT THREE MORE TIMES BEFORE LANDING. THE TRANSMISSION TEMPERATURE AND OIL PRESSURE REMAI
- [SDR 2018FA0000123](https://openairdocs.org/sdr/2018FA0000123.md): Tab · damaged · Apr 3, 2018 · Doug MD900 · Main Rotor Blades
  > A SEGMENT OF THE TRIM TAB OF A MAIN ROTOR BLADE WAS LOST DURING FLIGHT. THE TRIM TAB WAS REPAIRED 201FHRS BEFORE THIS WAS DETECTED. THE SITUATION WAS DETECTED DURING A 100HRS INSPECTION. REPAIRED THE MAIN ROTOR BLADE BASED ON AN ENGINEERING DISPOSITION FROM
- [SDR CA160121022](https://openairdocs.org/sdr/CA160121022.md): Hose · cracked · Jan 21, 2016 · Doug MD900 · Engine Oil Cooler
  > (CAN) AFTER SHUT DOWN FOLLOWING A SHORT UNRELATED TEST FLIGHT, TRANSMISSION OIL WAS DISCOVERED COVERING THE TRANSMISSION DECK AND FLOWING DOWN THE SIDES OF THE FORWARD FUSELAGE. APPROXIMATELY 5 QUARTS OF THE 10 QUART CAPACITY IN THE MAIN TRANSMISSION HAD LEAKE
- [SDR CA151007018](https://openairdocs.org/sdr/CA151007018.md): Compressor · leaking · Sep 30, 2015 · Doug MD900 · Turbine Engine Compressor Section
  > (CAN) THE CREW OF THE HELICOPTER WAS FORCED TO MAKE AN EMERGENCY LANDING ON THE OUTSKIRTS OF PARIS DUE TO LEFT ENGINE LOW OIL PRESSURE AND SMOKE IN THE CABIN. TROUBLESHOOTING FOUND THE COMPRESSOR WET WITH OIL (POSSIBLY LEAKING FROM THE NR 3 BEARING CAVITY) AND
- [SDR CA150901001](https://openairdocs.org/sdr/CA150901001.md): Engine · power loss · Aug 20, 2015 · Doug MD900 · Engine (Turbine/Turboprop)
  > (CAN) DURING TAKE-OFF THE EEC WARNING LIGHT CAME ON FOR A SHORT TIME AND ENGINE NR 1 DID NOT ACCELERATE. AFTER ANOTHER TAKE-OFF ATTEMPT THE ENGINE SPOOLED DOWN AND WENT OFF. THE PILOT TRIED TO RESET THE EEC BUT WITH NO SUCCESS. FIELD SERVICE REP. WILL GO ON SI
- [SDR QMLA2015050715037](https://openairdocs.org/sdr/QMLA2015050715037.md): Motor · faulty · May 7, 2015 · N900UM · Doug MD900 · Cabin Cooling System
  > UPON DESCENT DURING FINAL APPROACH TO LANDING SITE, THE PILOT & CREW REPORTED TO EACH OTHER THE DETECTION OF AN ELEC BURNING ODOR THAT CONTINUED TO GET STRONGER. AFTER LANDING & POWERING DOWN WITHIN SECONDS THE ODOR DISSIPATED. TROUBLE SHOT SYS & FOUND THAT
- [SDR CA141014021](https://openairdocs.org/sdr/CA141014021.md): Drive Ring · cracked · Oct 12, 2014 · Doug MD900 · Main Rotor Head
  > (CAN) WHILE STATIC WITH BLADES UNTIED THE AIRCRAFT WAS SUBJECTED TO ROTOR WASH FROM A HEAVY HELICOPTER. A PREFLIGHT INSPECTION THE FOLLOWING DAY REVEALED THE MAIN ROTOR DRIVE RING WAS CRACKED.
- [SDR CA141008011](https://openairdocs.org/sdr/CA141008011.md): Throttle · malfunctioned · Sep 21, 2014 · Doug MD900 · Power Lever
  > (CAN) UPON LANDING, THE PILOT LOWERED THE COLLECTIVE AND 1 ENGINE BEGAN TO ACCELERATE. THE PILOT RAISED THE COLLECTIVE TO APPLY TORQUE TO REDUCE ENGINE SPEED. THIS SEEMED TO LOWER THE SPEED MOMENTARILY. THE ENGINE THEN BEGAN TO ACCELERATE AGAIN, THE PILOT TU
- [SDR QMLA2014051314052](https://openairdocs.org/sdr/QMLA2014051314052.md): Battery Box · cracked · May 13, 2014 · N900UM · Doug MD900 · Battery Box Structure
  > DURING AN ONGOING MX INSPECTION, MULTIPLE CRACKS WERE FOUND ON LOWER LT BATTERY BOX CLOSE OUT FLANGE. OBTAINED ENGINEERING SERVICE REPORT, ESR900-09201-CP1 DESCRIBING THE REPAIR. THIS REPAIR HAS BEEN CLASSIFIED AS MINOR FROM THE MANUFACTURER. THIS ACFT CON
- [SDR QMLA2014050614051](https://openairdocs.org/sdr/QMLA2014050614051.md): Blade · cracked · May 6, 2014 · N900UM · Doug MD900 · Tail Rotor Blades
  > DURING THE 12 MONTH AAIP INSPECTION, FOUND 7 OF 13 NOTAR BLADES WITH SMALL CRACKS COMING FROM THE DRAIN HOLE OF EACH BLADE CUFF. REPLACEMENT PARTS HAVE BEEN ORDERED & THE ACFT REMAINS OUT OF SERVICE AT THE TIME OF THIS SUBMISSION.
- [SDR CA140224011](https://openairdocs.org/sdr/CA140224011.md): Connector · contaminated · Feb 17, 2014 · Doug MD900 · Turbine Engine System Wiring
  > (CAN) DURING FINAL APPROACH, THE MAIN GEARBOX FIRE INDICATION AND AUDIO WARNING WERE ACTIVATED ACCOMPANIED BY A STRONG BURNING ODOR AND SMALL AMOUNT OF SMOKE IN THE CABIN. THE CREW REQUESTED FIRE BRIGADE UPON LANDING. ENGINES WERE SHUTDOWN ON THE GROUND. PO
- [SDR QMLA2014012214010](https://openairdocs.org/sdr/QMLA2014012214010.md): Transmission · making metal · Jan 22, 2014 · N902LC · Doug MD900 · Engine/Transmission Coupling
  > MULTIPLE MAIN TRANSMISSION CHIP LIGHTS, AFTER FOLLOWING CSP 900RMM 2 CHAPTER 63-20-00 & TABLE 601. CHIPS INDICATED ALL UNDER THE LIMITS OF THE CHAPTER BUT COME ON EACH AIRCRAFT RUN UP.
- [SDR STRA20131112101](https://openairdocs.org/sdr/STRA20131112101.md): Display · inoperative · Nov 10, 2013 · N902YN · Doug MD900 · Rotor Drive Indicating System
  > DURING FLIGHT, PILOT REPORTED NR 1 AND 2 ENGINES, AND MAIN TRANSMISSION FIRE WARNING LIGHTS. AT THE SAME TIME, THE ENGINE MONITORING DISPLAY (IIDS) WENT BLANK. PILOT PROCEDED TO MAKE A PRECAUTIONARY LANDING. INSPECTION OF THE ACFT REVEALED NO EVIDENCE OF FI
- [SDR QMLA2013F00175](https://openairdocs.org/sdr/QMLA2013F00175.md): Wire · chafed · Aug 31, 2013 · N900UM · Doug MD900 · Fire Protection System Wiring
  > NR 2 ENGINE FIRE LIGHT ILUMINATED AND FAULT RECORDED IN IIDS. FOUND FIRE LOOP WIRE SHIELDING CHAFED THROUGH NEAR THE BACK SIDE OF THE NR 2 ENGINE FIRE WALL.
- [SDR CA130822007](https://openairdocs.org/sdr/CA130822007.md): Fmu · malfunctioned · Aug 17, 2013 · Doug MD900 · Fuel Controlling System
  > (CAN) AFTER AN UNEVENTFUL CLIMB, THE CHECKS WERE NORMAL BUT LESS THAN A MINUTE LATER THE NR WAS NOTED AT 101 PERCENT SHORTLY FOLLOWED BY 102 PERCENT. THE CREW REPORTED AS THE DESCENT WAS IMMINENT, THE POWER RESPONSE AND ON LOWERING THE COLLECTIVE THE NR INCRE
- [SDR CA130729002](https://openairdocs.org/sdr/CA130729002.md): Engine · power loss · Jul 15, 2013 · Doug MD900 · Engine (Turbine/Turboprop)
  > (CAN) AFTER DROPPING A SLINGED LOAD, THE NR 2 ENGINE FROZE AT HIGH TORQUE FOR 20 SEC. THE NR 1 ENGINE REDUCED POWER ACCORDINGLY BUT THE MAIN ROTOR OVERSPED TO 104 PERCENT. TROUBLESHOOTING IS ON-GOING.
- [SDR CA130617002](https://openairdocs.org/sdr/CA130617002.md): Engine · shutdown · Jun 10, 2013 · Doug MD900 · Engine (Turbine/Turboprop)
  > (CAN) THE PILOT REPORTED AN ELECTRONIC ENGINE CONTROL SHUTDOWN FROM THE LT ENGINE. THE PILOT REQUESTED MORE POWER FROM RT ENGINE TO FLY OVER THE CABLES IN FRONT OF HIM. THE PILOT COMPLETED AN UNEVENTFUL LANDING AND SHUTDOWN THE ENGINES.
- [SDR CA130508014](https://openairdocs.org/sdr/CA130508014.md): Screw · missing · May 3, 2013 · Doug MD900 · Tail Rotor System
  > (CAN) FOD DAMAGE TO NOTAR FAN. STATOR BLADE RETAINER SCREW FOUND MISSING.
- [SDR STRA20130417101](https://openairdocs.org/sdr/STRA20130417101.md): Control Rod · faulty · Apr 16, 2013 · N902TX · Doug MD900 · Tail Rotor Control System
  > ON DAILY INSPECTION FOR COMPLIANCE OF DAILY AD 2004-16-08 FOR THE NOTAR FAN CONTROL ROD, IT WAS FOUND THAT SAFETY LANDYARDS ON THE FORCE LIMITING ASSY WERE TIGHT. UPON FURTHER INVESTIGATION FOUND THAT LANDYARDS WERE TIGHT WHEN MOVING LEFT AND RIGHT PEDALS FUL
- [SDR CA121211003](https://openairdocs.org/sdr/CA121211003.md): Compressor · seized · Dec 3, 2012 · Doug MD900 · Turbine Engine Compressor Section
  > (CAN) CREW COMPLAINED OF POPPING NOISE WHEN GOING FROM IDLE TO FLY CONDITION. MECHANIC CONFIRMED NOISE AND COMMENCED COMPRESSOR WASHES AND RINSES. DURING THE RINSE CYCLE SPOOL DOWN THE MECHANIC NOTED A LOUD AND ABRUPT GRINDING NOISE. HE TRIED TO ROTATE THE C
- [SDR CA121120005](https://openairdocs.org/sdr/CA121120005.md): Hub · cracked · Nov 10, 2012 · Doug MD900 · Main Rotor Head
  > (CAN) AD 2012-21-01 WAS CARRIED OUT IAW SB900-117. AN EDDY CURRENT INSPECTION WAS CARRIED OUT BY NDT AND WAS DETERMINED TO HAVE AN.1250" ANOMOLY. THE LOWER HUB WAS THEN REPLACED WITH A NEW ASSY WHICH DID NOT REQUIRE AD 2012-21-01 TO BE CARRIED OUT.
- [SDR CA120716009](https://openairdocs.org/sdr/CA120716009.md): Blade · fractured · Jul 8, 2012 · Doug MD900 · Turbine Section
  > (CAN) AFTER TAKINGOFF FROM THE ROOF OF A HOSPITAL, DURING THE TRANSITION PHASE, THE CREW HEARD A LOUD NOISE FOLLOWED BY A POWER LOSS AND NR 1 ENGINE SHUTDOWN. THE CREW FLEW THE ACFT SINGLE ENGINE (OEI) AND PERFORMED AN UNEVENTFUL RUN-ON LANDING AT AIRPORT.
- [SDR QMLA2012060912095](https://openairdocs.org/sdr/QMLA2012060912095.md): Transmission · making metal · Jun 9, 2012 · N902LC · Doug MD900 · Main Rotor Gearbox
  > CHIP LIGHT MAIN ROTOR TRANSMISSION.
- [SDR CA111125009](https://openairdocs.org/sdr/CA111125009.md): Blade · cracked · Nov 18, 2011 · Doug MD900 · Main Rotor Blades
  > (CAN) UPON DAILY INSPECTION, IT WAS DISCOVERED THAT THE OTBD L/E ABRASION STRIP WAS CRACKED BEYOND LIMITS. THE M/R BLADE WAS R & R WITH A RENTAL UNIT. THE BLADE IS CURRENTLY OUT FOR REPAIR.
- [SDR CA111125008](https://openairdocs.org/sdr/CA111125008.md): Bearing · separated · Nov 18, 2011 · Doug MD900 · Main Rotor Head
  > (CAN) ON INSPECTION, ELASTOMERICS OF BEARING FOUND SEPARATED FROM THE CENTER MOUNT. BEARING WAS COMPLETELY UNSERVICEABLE.
- [SDR QMLA2011050911056](https://openairdocs.org/sdr/QMLA2011050911056.md): Impeller · damaged · May 9, 2011 · N902LC · Doug MD900 · Turbine Engine Compressor Section
  > PART OF THE GASKET OF THE INLET SCREEN CAME LOOSE AND WAS INGESTED INTO THE ENGINE. ONE BLADE ON THE COMPRESSOR HAD DAMAGE THAT CAUSED A LOUD WHINING NOISE WHEN THE ENGINE WAS OPERATED. THE ONLY DAMAGE THAT CAN BE OBSERVED IS THE COMPRESSOR BLADES. IT IS BE
- [SDR QMLA2010071210034](https://openairdocs.org/sdr/QMLA2010071210034.md): Blade · debonded · Jul 12, 2010 · N902LC · Doug MD900 · Main Rotor Blades
  > DURING 100 HR INSP DAMAGE LOCATED APPROX 1.25 INCHES FROM THE OTBD END OF THE BLADE TIP, ALONG THE AFT EDGE OF THE ABRASION STRIP ON THE LOWER SURFACE, AND MEASURES 1.00 INCH WIDE BY.50 INCHES LONG (FWD/AFT). THE OVERALL SIZE OF THE DAMAGE IS ROUGHLY THE SIZ
- [SDR 2009FA0000674](https://openairdocs.org/sdr/2009FA0000674.md): Fire Detector · false indication · Aug 7, 2009 · N905LF · Doug MD900 · Fire Detection
  > FIRE WARNING LIGHT ILLUMINATED IN FLIGHT. THIS WAS A FALSE INDICATION GIVEN BY THE FIRE CONTROL BOX.
- [SDR 2009FA0000440](https://openairdocs.org/sdr/2009FA0000440.md): Drive Shaft · corroded · Jan 30, 2009 · N902PD · Doug MD900 · Engine/Transmission Coupling
  > DURING AN ANNUAL INSP THE MAIN ROTOR DRIVE SHAFT AND DRIVE PLATE WHERE REMOVED TO SATISFY THE 12 MONTH REQUIREMENT. WHILE REMOVING THE DRIVE SHAFT IT WAS FOUND THAT THE GREASE COATING ON LWR DRIVE SPLINE WAS DISCOLORED AND DEGRADED. FURTHER INSP SHOWED MOIS
- [SDR L19A2008102400050](https://openairdocs.org/sdr/L19A2008102400050.md): Adapter · broken · Oct 19, 2008 · N902NM · Doug MD900 · Stabilizer Actuator
  > THE HELICOPTER WAS IN CRUISE FLIGHT AND THE VSCS ADAPTER BROKE IN TWO. THIS CAUSED THE A CONTROL PROBLEM WITH THE HELICOPTER UNTIL IT SLOWED BELOW 100 KTS. THE AIRCRAFT CAME BACK TO THE AIRPORT AND LANDED WITH NO PROBLEMS. THERE IS NOW A NEW AD ON THIS MATTE
- [SDR 2008FA0000557](https://openairdocs.org/sdr/2008FA0000557.md): Control Rod · broken · Aug 1, 2008 · N902RN · Doug MD900 · Stabilizer Actuator
  > EXPERIENCED EXCESSIVE LT PEDAL (2-3 INCHES) DURING CRUISE FLIGHT AT 70 TO 80 PERCENT TRANSMISSION TORQUE. DURING POST FLIGHT FOUND THAT THE LT VERTICAL STABILIZER MOVED FREELY. FURTHER INSPECTION REVEALED THAT THE LT VERTICAL STABILIZER CONTROL SYSTEM (VSCS)
- [SDR CA071016007](https://openairdocs.org/sdr/CA071016007.md): Bearing · failed · Sep 8, 2007 · Doug MD900 · Turbine Section
  > (CAN) THE ENGINE CHIP DETECTOR ACTIVATED, ACCOMPANIED BY VIBRATION AND A TEMPERATURE INCREASE, AND THE ENGINE WAS SHUTDOWN IN FLIGHT. SUBSEQUENT INVESTIGATION REVEALED A DAMAGED NR3 BEARING AND RESULTANT TURBOMACHINERY DAMAGE. (TC NR 20071016007)
- [SDR DLM90070977](https://openairdocs.org/sdr/DLM90070977.md): Cusp Web · cracked · Jul 31, 2007 · N907DA · Doug MD900 · Fuselage Miscellaneous Structure
  > LT CUSP WEB OUT OF LIMITS, CRACKED AT LIGHTEN HOLE FS 873. REPAIRED CUSP WEB IAW MD-88 SRM 53-05D FIG 827D.
- [SDR DLM90070817](https://openairdocs.org/sdr/DLM90070817.md): Skin · dented · Jun 24, 2007 · N903DA · Doug MD900 · Fuselage Main, Plate/Skin
  > DENT NEAR STA 245 BETWEEN L-17L AND L-18L. CUT OUT DENT AND INSTALL REPAIR DOUBLER.
- [SDR DLM90070875](https://openairdocs.org/sdr/DLM90070875.md): None · none · Jun 21, 2007 · N906DA · Doug MD900 · Standard Practices/Structures
  > TEMP REPAIR INSTALLED ON FUSELAGE SKIN AT RT CANT FRAME STA 1531 APPROX 16 IN UP FROM DOOR CUT OUT. REMOVED TEMP REPAIR AND INSTALLED PERM. REPAIR IAW MD90 SRM 53-00-01 FIG 4 VOL I.
- [SDR DLM90070761](https://openairdocs.org/sdr/DLM90070761.md): Skin · dented · Jun 19, 2007 · N906DA · Doug MD900 · Fuselage Main, Structure
  > UPPER FUSELAGE SKIN HAS 2 DENTS CONTAINED IN ONE BAY STA 218 LONGERON 17-18L. DEPTH =.031 BY MINOR =.75 DEPTH =.015 BY MINOR =.25 2ND DENT CLOSER THAN 1 INCH FROM STRUCTURE. REPAIRED SKIN IAW MD90 SRM 53-30-01 FIG 5.
- [SDR DLM90070760](https://openairdocs.org/sdr/DLM90070760.md): Attach Fitting · corroded · Jun 3, 2007 · N906DA · Doug MD900 · Vertical Stabilizer
  > RT I/B VERTICAL STAB TO HORIZONTAL ATTACH PLATE HAS CORROSION ON PLATE FACE AND BORE. REPAIRED RT I/B VERTICAL STAB TO HORIZONTAL HINGE IAW MD90 SRM 55-30-05 PAR 5.
- [SDR DLM90070196](https://openairdocs.org/sdr/DLM90070196.md): Attach Angle · cracked · Mar 7, 2007 · N916DN · Doug MD900 · Fuselage, Stabilizer Attach Fittings
  > THE RT FUSELAGE TO VERTICAL STABILIZER ATTACH ANGLE WAS FOUND WITH A CRACK NEAR THE AFT END OF THE ANGLE. THE CRACK MEASURED 1" LONG AND IS TYPICAL OF CRACKS DOCUMENTED PER BAC S/B MD90-53-027. THE CRACK WAS TRIMMED OUT AND REPAIRED WITH A REPAIR ANGLE PER T
- [SDR 2006FA0000620](https://openairdocs.org/sdr/2006FA0000620.md): Hose · cracked · Jun 8, 2006 · N902PD · Doug MD900 · Main Rotor Mast/Swashplate
  > PILOT NOTICED TRANSMISSION OIL PRESSURE INDICATION DROPPED FROM GREEN TO YELLOW TO RED. MADE UNSCHEDULED LANDING. FOUND FWD LT TRANSMISSION OIL COOLER HOSE LEAKING. HOSE IS A FLEXIBLE STAINLESS STEEL HOSE WITH A STAINLESS STEEL OUTER BRAID. HOSE WAS INSPECTED
- [SDR 2006FA0000501](https://openairdocs.org/sdr/2006FA0000501.md): Oil Cooler · leaking · May 16, 2006 · N902PD · Doug MD900 · Engine Oil Cooler
  > FOUND WETTING OIL MAIN TRANSMISSION/ENGINE OIL COOLER CORE. REMOVED AND SENT OUT FOR EVALUATION. COOLER FOUND TO HAVE INTERNAL CORROSION THAT CAUSED MATERIAL LOSS AND SUBSEQUENT LEAKING. REPLACED COOLER WITH NEW. LEAK CHECK WAS SATISFACTORY.
- [SDR 2006FA0000508](https://openairdocs.org/sdr/2006FA0000508.md): Beam · cracked · May 16, 2006 · N902PD · Doug MD900 · Main Rotor Head
  > DURING SCHEDULED INSPECTION FOUND FLEXBEAM CRACKED IN LEG OF FLEXBEAM. REJECTED FLEXBEAM IAW INSPECTION CRITERIA IN MM. REPLACED WITH NEW FLEXBEAM.
- [SDR 2006FA0000507](https://openairdocs.org/sdr/2006FA0000507.md): Beam · cracked · May 16, 2006 · N902PD · Doug MD900 · Main Rotor Head
  > DURING SCHEDULED INSPECTION FOUND FLEXBEAM CRACKED IN LEG OF FLEXBEAM. REJECTED FLEXBEAM IAW INSPECTION CRITERIA IN MAINTENANCE MANUAL. REPLACED WITH NEW FLEXBEAM.
- [SDR 2006FA0000506](https://openairdocs.org/sdr/2006FA0000506.md): Hose · cracked · May 16, 2006 · N902PD · Doug MD900 · Main Rotor Gearbox
  > DISCOVERED MAIN TRANSMISSION OIL HOSE FROM OIL COOLER TO MAIN TRANSMISSION LEAKING FROM STEEL BRAIDING. PULLED BACK BRAIDING AND FOUND HOSE TO BE CRACKED. REPLACED LINE WITH NEW. LEAK CHECK OF NEW LINE WAS SATISFACTORY. P/N 900D3409526-105.
- [SDR 2006FA0000503](https://openairdocs.org/sdr/2006FA0000503.md): Hose · cracked · May 16, 2006 · N902PD · Doug MD900 · Main Rotor Gearbox
  > DISCOVERED MAIN TRANSMISSION OIL HOSE FROM OIL COOLER TO MAIN TRANSMISSION LEAKING FROM STEEL BRAIDING. PULLED BACK BRAIDING AND FOUND HOSE TO BE CRACKED. REPLACED LINE WITH NEW. LEAK CHECK OF NEW LINE WAS SATISFACTORY, P/N 900D3409526-105.
- [SDR DLM90060376](https://openairdocs.org/sdr/DLM90060376.md): Wire Harness · damaged · May 13, 2006 · N916DN · Doug MD900 · APU System Wiring
  > RETURN TO GATE DUE TO ELECTRICAL FUMES IN CABIN.APU AND LEFT ENGINE RUNNING. MOMENTARY LOSS OF ELECTRICAL POWER WITH EMERGENCY POWER COMING ON. EMERGENCY POWER IN USE LIGHT CAME ON WITH SWITCH IN ARM POSITION. APU HARNESS/STARTER AND R2-63 RELAY REPLACEMENT
- [SDR DLM90060350](https://openairdocs.org/sdr/DLM90060350.md): Hydraulic System · unknown · May 1, 2006 · N910DN · Doug MD900 · Hydraulic System, Main
  > RIGHT SYSTEM HYDRAULIC PRESSURE LOW AFTER TAKEOFF FROM SLC. REPLACED RIGHT SYSTEM RESERVOIR SERVICED THE RIGHT HYD SYSTEM. BLEED SYSTEM PERFORMED OP AND LEAK CHECK OF THE RIGHT ELEC AUX PUMP AND RIGHT ENGINE DRIVE PUMP. ALL CHECK GOOD AND NO LEAKS NOTED.
- [SDR L192006F00000](https://openairdocs.org/sdr/L192006F00000.md): Line · worn · Apr 14, 2006 · N911AC · Doug MD900 · Engine Bleed Air System
  > ON TRAINING FLIGHT, RT ENG FIRELIGHT CAME ON. PILOT COMPLIED WITH EMERGENCY PROCEDURES, THEN SHUT RT ENG DOWN AND DISCHARGED RT ENG FIRE BOTTLE, LANDED AC AND FIRE LIGHT WENT OUT. AC WAS CHECKED FOR FIRE IN ENG COMPT, NONE WAS FOUND. NO EVIDENCE OF FLAMES I
- [SDR 2006FA0000274](https://openairdocs.org/sdr/2006FA0000274.md): Hose · cracked · Mar 1, 2006 · N902PD · Doug MD900 · Main Rotor Gearbox
  > HOSE IS INSTALLED ON MD902 HELICOPTERS. MD P/N IS 900D3409526-105. HOSE IS USED FOR MAIN TRANSMISSION OIL COOLING. FOUND LARGE ACCUMULATION OF OIL ON TRANSMISSION DECK AFTER FLIGHT. HOSE WAS FOUND TO BE CRACKED IN ONE OF THE BELLOWS. (CORE OF HOSE IS STAIN

Next page: https://openairdocs.org/model/md-helicopters-md-900/reports.md?page=2

## The whole list in SQL

Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS:

```sql
SELECT sdr_id, difficulty_date, n_number, aircraft_make, aircraft_model, part_name, part_condition, jasc_code, discrepancy
FROM 'https://openairdocs.org/data/latest/faa_service_difficulty_report.parquet'
WHERE aircraft_model_key = 'MD900'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/model/md-helicopters-md-900/reports

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