# Service difficulty reports: JASC 3700 A list on [JASC 3700](https://openairdocs.org/jasc/3700.md). Reports filed under 3700 · Vacuum System, newest first. - [SDR DALA2026081404654](https://openairdocs.org/sdr/DALA2026081404654.md): Generator · overheated · Aug 13, 2026 · N576DN · Airbus A321271NX > UNIDENTIFIED SMELL REPORTED BY FLIGHT ATTENDANT IN AFT GALLEY. REPORTED SMELL AT THE GATE WITH ONLY EXTERNAL AIR HOOKED UP. FLIGHT ATTENDANTS THEN REPORTED THE SMELL GOT WORST AFTER ENGINE START. FOUND VACUUM GEN OVERHEATING AND CREATING ODOR. REPLACED VACUU - [SDR DALA2024101710156](https://openairdocs.org/sdr/DALA2024101710156.md): Vacuum Sys · faulted · Oct 16, 2024 · N353DN · Airbus A321211 > SHIP 3053 - ATB - DUE TO SEWAGE SMELL IN COCKPIT AND CABIN. CORRECTIVE ACTION: REPLACED WASTE VACUUM GENERATOR. (37MG). (LP 6513056) - [SDR 2024FA0000285](https://openairdocs.org/sdr/2024FA0000285.md): Pump · contaminated · Apr 4, 2024 · N1975T · Cessna 150M > OVER LAST 12 YEARS AND 500 HOURS OPERATING TIME N1975T HAS EXPERIENCED 5 FAILURES OF THE PUMP PN RAP215CC-9. IN EACH CASE EXCEPT LAST INSTALLATION A PROPERLY LICENSED FAA TECH FAILED TO FOLLOW RAPCO INSTALLATION INSTRUCTIONS INCLUDED WITH PUMP. THIS LEAD - [SDR DALA2024013101410](https://openairdocs.org/sdr/DALA2024013101410.md): Generator · inoperative · Jan 30, 2024 · N366NW · Airbus A320212 > SHIP 3266 DISC: SMOKE FUMES SMELL IN THE AFT OF THE AIR CRAFT, SOME HAZE ROW 30 AFT. LIKE A PLASTIC/BURNING SMELL. HAPPENED AFTER DEPLANING AND AFTER SECURITY CHECKLIST COMPLETED. C/A: R&R VACUUM GEN PER A320 AMM 38-31 OPS CHECK GOOD THIS CLEARS MEL 38-30-01D - [SDR CALA2022082902195](https://openairdocs.org/sdr/CALA2022082902195.md): Skin · none · Aug 26, 2022 · N15751 · Boeing 737 > BEGIN REPAIR AT L/H SIDE AT WASTE TANK VACUMM HOLE (REF AAR NR 9 9939552) 31-02932 INITIATE 2ND DIP FOR PLANNING TO CONTACT ENG FOR INSCPE CTION REQUIREMENTS ON REPAIR ON OR BEFORE JAN 10, 2024 (WORK ACC OMPLISHED BY V920656 AND V895387) COMPLIED WITH EC/RA 53 - [SDR CA190730027](https://openairdocs.org/sdr/CA190730027.md): Pump · sheared · Jun 26, 2019 · Cessna 185E > (CAN) WHILE PERFORMING A SCHEDULED INSPECTION, THE PILOT STATED THE VACUUM FLUCTUATED. FURTHER INSPECTION REVEALED THE SPLINES ON THE VACUUM PUMP HAD FAILED. THE VACUUM PUMP WAS REPLACED WITH A NEW PUMP,AND FUNCTION CHECK WAS CARRIED OUT SATISFACTORY. ALL WORK - [SDR AALA201709189020](https://openairdocs.org/sdr/AALA201709189020.md): Generator · failed · Sep 17, 2017 · N121AN · Airbus A321231 > FLIGHT ATTENDANT REPORTED A LOUD METALLIC GRINDING SOUND FROM BELOW THE RIGHT SIDE AFT GALLEY FLOOR, FOLLOWED BY THE ODOR OF ELECTRICAL SMOKE. MAINTENANCE FOUND SOURCE OF ODOR TO BE THE LAVATORY VACUUM GENERATOR (37MG). REPLACED VACUUM GENERATOR IAW AMM 38-3 - [SDR 2017FA0000289](https://openairdocs.org/sdr/2017FA0000289.md): Pump · sheared · Jul 18, 2017 · N809Q · Cessna 206H > VACUUM PUMP FAILED IN FLIGHT. CAUSED INSTRUMENT OPERATIONAL FAILURE OF SEVERAL INSTRUMENTS. OVERHAULED. - [SDR 2017FA0000118](https://openairdocs.org/sdr/2017FA0000118.md): Hose · deteriorated · Mar 22, 2017 · N400ME · Mooney M20S > STANDBY VACUUM SYSTEM FOUND INOPERATIVE. ELECTRIC DRIVEN PUMP FOUND FULL OF THICK OILY SUBSTANCE. HOSE FROM PUMP TO FIREWALL WAS FULL OF THIS FLUID BUT THERE WAS NONE IN VACUUM REGULATOR. IT APPEARS THE FLUID IS FROM DETERIORATION OF THE HOSE. THIS IS AN EMERG - [SDR VE7A2017021300001](https://openairdocs.org/sdr/VE7A2017021300001.md): Pump · failed · Feb 6, 2017 · N709P · Skrsky S76C > ELECTRICAL BURNING ODOR DETECTED AND SMOKE NOTED IN CABIN JUST PRIOR TO TAKE-OFF. TAKE-OFF ABORTED. MAINTENANCE INSPECTED THE AIRCRAFT FOR ANY OBVIOUS SIGNS OF BURNING OR SMOKE DAMAGE, NONE NOTED. FLIGHT CREW INITIATED A FUNCTIONAL START-UP TO DETERMINE SOURC - [SDR CA130612002](https://openairdocs.org/sdr/CA130612002.md): Relief Valve · worn · Jun 12, 2013 · Cessna 208B > (CAN) PART WAS INSTALLED NEW DURING INSPECTION. AFTER NOTING THAT THE ORIGINAL EJECTOR RELIEF VALVE WAS SHOWING SIGNS OF WEAR. THIS PART OPERATED FOR 4.7 HRS AND FAILED AGAIN. WE HAVE BEEN NOTICING THIS IN MULTIPLE DIFFERENT ACFT IN THE FLEET. SYS OUTPUT P - [SDR CA130313003](https://openairdocs.org/sdr/CA130313003.md): Switch · failed · Mar 8, 2013 · Cessna 172S > (CAN) VACUUM MANIFOLD WAS TESTED DURING 200 HR INSPECTION OF THE ACFT. LEFT LOW VACUUM LIGHT WOULD NOT COME ON. SWITCH FOUND TO BE UNSERVICEABLE. VACUUM MANIFOLD WAS MFG IN SEPTEMBER 2010 AND INSTALLED NEW IN THE ACFT IN APRIL 2011. VACUUM MANIFOLD REPACED. - [SDR BSY2008F00018](https://openairdocs.org/sdr/BSY2008F00018.md): Pump · failed · Oct 23, 2008 · N9044V · Beech 58 > RT ENGINE DRIVEN VAC PUMP FAILED. THE SCREW FOR CHECKING WEAR ON VANES WAS MISSING, CAUSING PREMATURE FAILURE. (K) - [SDR BSY2008F00008](https://openairdocs.org/sdr/BSY2008F00008.md): Pump · failed · Oct 21, 2008 · N21ES · Beech 58 > LT ENGINE DRIVEN VAC PUMP FAILED THE SCREW FOR CHECKING WEAR WAS MISSING CAUSING PREMATURE FAILURE. (K) - [SDR DUFA20070004](https://openairdocs.org/sdr/DUFA20070004.md): Drive Assy · sheared · Aug 16, 2007 · N3796C · Cessna 402B > WHILE IN CRUISE FLIGHT THE PILOT NOTICED OIL STREAMING FROM THE TOP OF THE LT ENGINE COWL. THE OIL PRESSURE WAS STILL IN THE NORMAL OPERATING RANGE AND THE ENGINE APPEARED TO BE OPERATING NORMALLY. AS A PRECAUTION, THE LT ENGINE WAS SHUTDOWN AND SECURED. THE P - [SDR 2007FA0000006](https://openairdocs.org/sdr/2007FA0000006.md): Shaft · broken · Sep 26, 2006 · N865AF · Grob G120A > DURING ENGINE START, SUCTION PRESSURE WAS READING ZERO, DURING FURTHER TROUBLESHOOTING, TECH FOUND THE ENGINE DRIVEN DRIVEN DRY AIR PUMP HAD A BROKEN SHAFT. PROBABLE CAUSE COULD BE FROM VIBRATION OR HARD START. NO RECOMMENDATION AT THIS TIME. (K) - [SDR 2007FA0000005](https://openairdocs.org/sdr/2007FA0000005.md): Pump · worn · Sep 22, 2006 · N862AF · Grob G120A > DURING FLIGHT SUCTION PRESSURE READING DROPPED TO ZERO, DURING FURTHER TROUBLESHOOTING TECHICIAN FOUND THE ENGINE DRIVEN DRY AIR PUMP SHAFT HAD BROKEN. PROBABLE CAUSE COULD BE FROM ENGINE VIBRATION OR POOR PARTS. RECOMMENDATION AT THIS TIME IS FOR THE MFG T - [SDR COMA0660548](https://openairdocs.org/sdr/COMA0660548.md): Regulator · faulty · Sep 20, 2006 · N989CA · Cndair CL6002B19 > FLIGHT 5555- ENROUTE, LOST CABIN PRESSURE AT 10,000 FT, CREW DECLARED AN EMERGENCY AND FLIGHT LANDED AT LGA WITHOUT INCIDENT. REPLACED THE VACUUM REGULATOR. - [SDR 2006UALA01257](https://openairdocs.org/sdr/2006UALA01257.md): Vacuum Sys · obstructed · Jun 26, 2006 · N227UA · Boeing 777222 > LAV PROBLEMS. AFT VACUUM SYS LAVS BLOCKED. FOUND WASTE SYSTEM VACUUM BLOWER INOPERATIVE. ALSO, DAMAGE TO DUCTING AND CLAMP AROUND DUCT. ACCCOMPLISHED DUCT REPAIR & CLAMP REPLACEMENT. REPLACED VACUUM FAN BLOWER. SECURED UNIT IN AFT CARGO COMPARTMENT. REACTI - [SDR BSYA200500030](https://openairdocs.org/sdr/BSYA200500030.md): Seal · slipped · Dec 12, 2005 · N400RP · Beech 58 > ON TAKEOFF, PILOT NOTICED SMOKE COMING FROM LT ENGINE, PILOT ELECTED TO RETURN TO DEPARTURE. MAINTENANCE FOUND THAT THE NEWLY INSTALLED VACUUM PUMP SEAL HAD SLIPPED DURING INSTALLATION. REMOVED AND REPLACED SEAL, OPS CHECKS GOOD. - [SDR 2006FA0000014](https://openairdocs.org/sdr/2006FA0000014.md): Exhaust Pipe · corroded · Nov 12, 2005 · N18993 · Beech C24R > EXHAUST PORT OF DRY AIR PUMP FELL OFF DURING FLIGHT AND LODGED IN LANDING GEAR RETRACTION SYSTEM. AC HAD TO LAND NOSE GEAR UP. PIPE THREADS IN ALUMINUM PUMP HOUSING WERE WORN AND CORRODED. SUGGESTED THAT FITTINGS BE INSPECTED FOR SECURITY MORE FREQ THAN 100 - [SDR DXTA200500648](https://openairdocs.org/sdr/DXTA200500648.md): Line · contaminated · Mar 30, 2005 · N970QS · Cessna 750 > BAGGAGE SEAL CAS MESSAGE CAME ON AT FL 430 (CABIN PRESS OK), APPROX 1 HOUR LATER BAGGAGE ALTITUDE MESSAGE APPEARED AND CABIN PRESS STARTED CLIMBING AT 1000 FPM. DESCENDED TO 32000 AND CLOSED BAGGAGE ISOLATION VALVE PER CHECKLIST. CABIN PRESS STABILIZED AT 35 - [SDR CA040106003](https://openairdocs.org/sdr/CA040106003.md): Shaft · broken · Dec 19, 2003 · Piper PA31350 > (CAN) DURING THE LAST FLIGHT OF THE DAY THE LT INDICATOR LIGHT ON THE INSTRUMENT PANEL CAME ON, INDICATING THAT THE VACUUM PUMP HAD FAILED. AFTER LANDING, MAINTENANCE FOUND THAT THE SHAFT HAD BROKEN. RECEIVED OH PUMP NEXT MORNING INSTALLED, GROUND RUN NO FAU - [SDR 2002FA0000333](https://openairdocs.org/sdr/2002FA0000333.md): Pump · inoperative · Feb 7, 2002 · N58WC · Beech 58 > PILOT EXPERIENCED DUAL VACUUM PUMP FAILURE IN FLIGHT IN VFR CONDITIONS. - [SDR HYI2002F00002](https://openairdocs.org/sdr/HYI2002F00002.md): Manifold · failed · Jan 28, 2002 · N780EA · Cessna 402C > CREW REPORTED THAT ON START, LEFT ENGINE DRIVEN VACUUM PUMP CAUSED BOTH VACUUM SOURCE FAILURE INDICATORS TO ENGAGE. MAINTENANCE REMOVED AND REPLACED VACUUM MANIFOLD AND RELEASED THE AIRCRAFT BACK TO SERVICE. - [SDR CA020226007](https://openairdocs.org/sdr/CA020226007.md): Pump · failed · Dec 4, 2001 · Piper PA31350 > (CAN) VACUUM PUMP INSTALLED ON ENGINE, TEST SHOWED EXCESSIVE OIL LEAK AT MOUNT BASE. OIL PRESSURE ON ENGINE WENT TO "0" INDICATED AND ENGINE WAS SHUT DOWN. REPLACEMENT PUMP INSTALLED AND OIL SCREEN DETECTED METAL IN ENGINE. - [SDR CA010627014](https://openairdocs.org/sdr/CA010627014.md): Line · worn · May 9, 2001 · Boeing 7372A9C > (CAN) AT CRUISE, FIRST OFFIER'S AIRSPEED INDICATION WASERRATIC, AIRCRAFT LANDED WITHOUT INCIDENT. FOUND PITOT STATIC LINES WORN. LINES REPLACED AND TESTED SERICEABLE IAW MM34-11-0. NO FURTHER INCIDENT DURING SUBSEQUENT FLIGHT. - [SDR CA001122026](https://openairdocs.org/sdr/CA001122026.md): Drive Shaft · failed · Nov 9, 2000 · Cessna 172RG > (CAN) NEW VACCUM PUMP FAILS AFTER ONLY 36 HOURS IN SERVICE. - [SDR 20000920SH011](https://openairdocs.org/sdr/20000920SH011.md): Gasket · leaking · Jun 3, 2000 · N7C · Amrgen AA1A > REPLACED VAC/PUMP OIL SEAL STD-208 AND GASKET SL-61183 (2 TIMES SL-61183). OIL WOULD LEAK OUT IN GREAT AMOUNT. SEAL/GASKET DOES NOT HOLD OIL PRESSURE. THE ALUM/BODY HAD A SHAFT AND GEAR DRIVING THE VAC/PUMP. THERE IS A BORED/HOLE TO FEED OIL UNDER PRESSURE - [SDR 99ZZZX2237](https://openairdocs.org/sdr/99ZZZX2237.md): Valve · mismanufactured · Apr 26, 1999 > THE PISTON ASSEMBLY WITHIN THE SUSPECT VALVES MIGHT NOT HAVE BEEN ASSEMBLED TO PRINT AND TO ENSURE PARTS ARE LOCKHEED IN PLACE AS INTENDED. - [SDR 99ZZZX1051](https://openairdocs.org/sdr/99ZZZX1051.md): Connector · misinstalled · Feb 2, 1999 · N856ND · Piper PA44180 > AIRCRAFT BROUGHT IN FOR VACUUM PUMP FAILURE. BEFORE REPLACEMENT OF PUMP DURING RUN-UP AND OPS CHECK, THE OIL AREA ANNUNCIATOR WAS INDICATING THE VACUUM SYSTEM AND THE VACUUM ANNUNCIATOR WERE INDICATING THE OIL SYSTEM. TROUBLESHOOTING DISCOVERED THE WIRES IN - [SDR 99ZZZX86](https://openairdocs.org/sdr/99ZZZX86.md): Shaft · sheared · Dec 9, 1998 · N252MA · Piper PA31P > PUMP SHAFT SHEARED, FOUND PROPELLER SEIZED. - [SDR 98ZZZX3253](https://openairdocs.org/sdr/98ZZZX3253.md): Vacuum Pump · failed · Aug 19, 1998 · N34807 · Cessna 177RG > PART FAILED UPON THROTTLE REDUCTION FOR LANDING AFTER A 2.9 HOUR FLIGHT. LOW-VAC WARNING LIGHT ILLUMINATED. THE ALTERNATE VAC STANDBY SYSTEM OPERATED AUTOMATICALLY. PART INSTALLED TO REPLACE ORIG VAC PUMP WHICH FAILED AT 1872.1 HRS. AT INSTALLATION OF THIS ## 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 jasc_code = '3700' ORDER BY difficulty_date DESC ``` This list as a web page: https://openairdocs.org/jasc/3700/reports --- 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.