# JASC 3710: Vacuum Distribution System - Type: JASC system/component code (FAA) - ATA chapter: 37 Vacuum - Title in the code table: VACUUM DISTRIBUTION SYSTEM - Service difficulty reports: 292 - FAA code table: https://www.faa.gov/sites/faa.gov/files/JASC_Code.pdf#page=42 - Page: https://openairdocs.org/jasc/3710 ## What it covers The system components and parts, including the pump, regulator, oil separator or indication system, which are used to distribute low volume, negative pressure air (suction) to systems such as gyroscopic flight instruments, cabin rate controller, etc.; and to distribute low volume, positive pressure air to systems such as air foil deicer boots. Does not include the using systems. Typical parts are pump, filter, regulator, lines, manifold, check valves, element, etc. ## Service difficulty reports (292, newest 50) - [SDR AALA202606287933](https://openairdocs.org/sdr/AALA202606287933), Jun 23, 2026: Airbus A321231. VACUUM SYS. DEFECTIVE. AIRCRAFT WAS GROUNDED: AFTER LANDING, NUMBER 3 FLIGHT ATTENDANT ADVISED THAT DURING THE DESCENT BELOW 10000 FEET HE SMEL (N904AA) - [SDR 2026FA0000137](https://openairdocs.org/sdr/2026FA0000137), Jan 9, 2026: Cessna 172S. PUMP. INOPERATIVE. DURING CLIMB THE PILOT NOTICED ENGINE RPM FLUCTUATIONS. AIRCRAFT RETURNED BACK TO THE AIRPORT, DID ENGINE RUN UPS AND NO (N952JA) - [SDR 2025FA0000545](https://openairdocs.org/sdr/2025FA0000545), Aug 13, 2025: Helio H395. PUMP. SEIZED. THIS WAS A TRAINING FLIGHT. DURING A GO-AROUND, ON CLIMB OUT, THE PILOTS NOTICED THAT THE VACUUM GAGE READ 0 AND THAT TH (N87763) - [SDR 2024FA0000985](https://openairdocs.org/sdr/2024FA0000985), Dec 30, 2024: Cessna 402C. MANIFOLD. FAILED. THIS IS THE 2ND AIRCRAFT I DID HAVE THE SAME PROBLEM WITH (FIRST ONE WAS N9873F CESSNA 402-0303 MORE THAN 10 YEARS AGO). (N540NE) - [SDR 2022FA0000534](https://openairdocs.org/sdr/2022FA0000534), Sep 20, 2022: REGULATOR. SEPARATED. VACUUM REGULATOR SEPARATED AND CAME APART AT THE ADHESIVE BOND LINE BETWEEN THE MACHINED ALUMINUM BODY BODY AND FIREWALL - [SDR 2021FA0000127](https://openairdocs.org/sdr/2021FA0000127), May 2, 2021: Mtsbsi MU2B26A. VENTURI. BLOCKED. MU2P (MODEL 26A) VACUUM SYSTEM DISABLED DUE TO MUD DAUBER NEST BLOCKING VACUUM VENTURI EXHAUST PIPE. NEST WAS NOT VISIBL (N21HP) - [SDR 2021FA0000059](https://openairdocs.org/sdr/2021FA0000059), Feb 24, 2021: Cessna 172S. REGULATOR VALVE. DEFECTIVE. THE VACUUM REGULATOR VALVE WAS COMPLETELY INOPERABLE. VACUUM SYSTEM INDICATION WAS DIRECTLY PROPORTIONAL TO THE ENGINE R (N280SU) - [SDR 2020FA0000517](https://openairdocs.org/sdr/2020FA0000517), Oct 3, 2020: Cessna 172S. PUMP. FAILED. PILOT STATEMENT: ON OCTOBER 3RD, I WAS DOING TRAFFIC PATTERNS AT KTOA. WHEN I START THE ENGINE, I NOTICED THAT THE VACUU (N2060U) - [SDR 2020FA0000014](https://openairdocs.org/sdr/2020FA0000014), Nov 12, 2019: Cessna 310R. PUMP. FAILED. VACUUM PUMP FAILED IN LESS THAN 10 HOURS OPERATION. PROBABLY CAUSED BY DE-ICE CONTROL. VALVE RELIEF PRESSURE SET AT 5 PS (N6832Y) - [SDR UIEA2019111405906](https://openairdocs.org/sdr/UIEA2019111405906), Nov 12, 2019: Boeing 767306. MANIFOLD. DISCONNECTED. IN CRUISE FLIGHT, CARGO DET AIR STATUS MESSAGE DISPLAYED.(

T/S USING FIM 26-16 FAULT TREE 813. REPLACED PRESSURE SWITC (N1229A) - [SDR FQAR20191021013](https://openairdocs.org/sdr/FQAR20191021013), Oct 17, 2019: Piper PA28181. REGULATOR VALVE. BROKEN. PILOT SQUAWKED VAC INOP, VAN ANNUNCIATOR INOP, TROUBLESHOOTING REVEALED THAT THE VAC INOP SWITCH HAD FALLEN OFF THE VACU (N424PA) - [SDR 2018FA0000451](https://openairdocs.org/sdr/2018FA0000451), Oct 26, 2018: Cessna 182L. PUMP. FAILED. NEW VACUUM PUMP FAILURE 3P194-AFC. (N42045) - [SDR AALA2018082879060](https://openairdocs.org/sdr/AALA2018082879060), Aug 25, 2018: Airbus A319115. GENERATOR. DEFECTIVE. AIRCRAFT WAS GROUNDED. INBOUND CREW REPORTS ELECTRICAL SMELL RELATED TOO RIGHT HAND AFT LAVATORY AREA. REPLACED LAVATORY (N9008U) - [SDR RAIA201709290001](https://openairdocs.org/sdr/RAIA201709290001), Sep 29, 2017: Emb EMB145XR. LINE. UNKNOWN. PRESSURIZATION IN AUTO MODE SPIKES UPON TURNING ON. R & R VACUUM PUMP VACUUM LINES. PERFORMED OPS CHECK OF PRESSURIZATIO (N21144) - [SDR 2020FA0000112](https://openairdocs.org/sdr/2020FA0000112), May 7, 2016: Piper PA28R201. SHAFT. SHEARED. OWNER REPORTED NO VAC. REMOVED VAC PUMP. PLASTIC SHAFT SHEARED. REPLACED WITH NEW VAC PUMP. OPERATIONS CHECKED GOOD. (N8080U) - [SDR YAAA20151118001](https://openairdocs.org/sdr/YAAA20151118001), Nov 18, 2015: Cessna 207A. SHAFT. SHEARED. PILOT REPORTS SUCTION READING NIL. REMOVED VACUUM PUMP & SHAFT WAS SHEARED. (N7380U) - [SDR CA150824005](https://openairdocs.org/sdr/CA150824005), Aug 20, 2015: Piper PA31350. PUMP. FAILED. (CAN) THE RIGHT VACUUM PUMP HAS FAILED 4 TIMES IN ONE YEAR WITH THE AIRCRAFT FLYING ONLY 148 HOURS. TWO DIFFERENT AMOS H - [SDR CA150604020](https://openairdocs.org/sdr/CA150604020), May 17, 2015: Cessna 150G. COUPLING. SHEARED. (CAN) VACUUM COUPLING FAILED. PROBLEM FOUND ON START UP AND FLIGHT ABORTED. REPLACED VACUUM PUMP WITH NEW UNIT. ALL WORK - [SDR BSYR201309092058](https://openairdocs.org/sdr/BSYR201309092058), Sep 7, 2013: Cessna 210. PUMP. FAILED. 20 MINUTES AFTER DEPARTURE, VACUUM PUMP FAILED. PILOT RETURNED AND LANDED SAFELY AT BUY WITHOUT INCIDENT. (N761AY) - [SDR CA130531007](https://openairdocs.org/sdr/CA130531007), May 30, 2013: Dhav DHC3. PUMP. FAILED. (CAN) PLASTIC DRIVE COUPLING FAILED. VACUUM PUMP SCHEDULED FOR REPLACEMENT. - [SDR FAA20140307000147](https://openairdocs.org/sdr/FAA20140307000147), Mar 18, 2013: Mooney M20S. HOSE. DETERIORATED. LOW VACUUM ON THE STANDBY VACUUM PUMP. DURING REPLACEMENT, NOTICED AN OILY SUBSTANCE IN THE INLET HOSE OF THE STANDBY VA (N91710) - [SDR CA130306010](https://openairdocs.org/sdr/CA130306010), Mar 3, 2013: Piper PA31. PUMP. MALFUNCTIONED. (CAN) LEFT VACUUM PUMP REPORTED INOPERATIVE BY PILOT. VACUMM PUMP REPLACED. - [SDR CA121012017](https://openairdocs.org/sdr/CA121012017), Oct 10, 2012: Cessna 208B. RELIEF VALVE. UNSERVICEABLE. (CAN) PIC REPORTED ABNORMAL SUCTION INDICATION, AUTO-PILOT ISSUES, FLIGHT NAVIGATION INSTRUMENT INDICATION ISSUES. GROUN - [SDR CA121009002](https://openairdocs.org/sdr/CA121009002), Oct 6, 2012: Emb ERJ170200SU. DUCT. CRACKED. (CAN) FOUND DURING SCHEDULED MAINTENANCE, T-DUCT BELOW PRE-COOLER ON RT PYLON SIDE IS CRACKED. IPC ATTACHED, PN 170-1480 - [SDR CA120419007](https://openairdocs.org/sdr/CA120419007), Apr 19, 2012: Cessna 208B. RELIEF VALVE. FAILED. (CAN) THE PIC SNAGGED THE LOG BOOK,"SUCTION READS 4.1 AT 7500 FT PRESSURE ALT AT 94.5 PERCENT NG. SHOULD BE 4.5-5.5 ". D - [SDR CA120523017](https://openairdocs.org/sdr/CA120523017), Apr 16, 2012: Cessna 208. RELIEF VALVE. FAILED. (CAN) CHECK NUT LOOSENS ON VALVE ASSY CAUSING VALVE TO DISSASSEMBLE. VALVE DISSASSEMBLES AT VARYING TIMES IN SERVICE RAN - [SDR 2011FA0000325](https://openairdocs.org/sdr/2011FA0000325), May 11, 2011: Beech K35. DRIVE SHAFT. SHEARED. PUMP DRIVE SHAFT SHEARED RENDERING PUMP INOPERATIVE. THIS IS A SINGLE DRIVE, DUAL VACUUM PUMP. BOTH PUMPS INOPERATIVE. (N87DG) - [SDR FPI2010F00002](https://openairdocs.org/sdr/FPI2010F00002), Nov 1, 2010: Cessna 210L. SHUTTLE VALVE. BROKEN. DURING ANNUAL INSP OF ACFT, INSP OF SHUTTLE VALVE OF STANDBY VACUUM SYS FOUND THE VACUUM PUMP SIDE, VALVE SPRING BROKEN. (N5489V) - [SDR 2010FA0000663](https://openairdocs.org/sdr/2010FA0000663), Jun 30, 2010: Mooney M20R. HOSE. DETERIORATED. PILOT NOTICED A LOW VAC WARNING OF THE ENGINE DRIVEN VACCUME PUMP. TURN THE SWITCH ON FOR THE STANDBY VAC SYS AND THE CI (N2140D) - [SDR BSYA2010026](https://openairdocs.org/sdr/BSYA2010026), May 6, 2010: Beech 58. PUMP. FAILED. AFTER DEPARTING, THE RT VAC PUMP FAILED, ACFT RETURNED TO DEPARTURE AIRPORT. R & R VACUUM PUMP, OK FOR SERVICE. (N33DK) - [SDR CA100104003](https://openairdocs.org/sdr/CA100104003), Dec 28, 2009: Cessna 172N. COUPLING. FAILED. (CAN) VACUUM PUMP COUPLING FAILED. - [SDR GLBA20090508C](https://openairdocs.org/sdr/GLBA20090508C), May 8, 2009: Beech 1900D. VALVE. WORN. FLIGHT 5145 - THE PILOTS REPORTED THAT DURING CRUISE THE VACUUM PRESSURE WAS READING AS LOW AS 3.5 AT FLIGHT LEVEL 220. (N218YV) - [SDR 2009FA0000467](https://openairdocs.org/sdr/2009FA0000467), May 1, 2009: Cessna 182R. TUBE. SEPARATED. A SIGNIFICANT PROBLEM OCCURRED IN THE FUEL INDUCTION SYSTEM, WHERE A RUBBER INTAKE TUBE CONNECTS THE INTAKE MANIFOLD TO (N5481N) - [SDR BSYA2009022](https://openairdocs.org/sdr/BSYA2009022), Apr 6, 2009: Beech 58. PUMP. DAMAGED. AIRCRAFT WAS EN ROUTE FROM LUK TO BKL WHEN THE RIGHT VAC PUMP FAILED. DIVERTED TO LCK. MAINTENANCE REMOVED AND REPLACED (N33WC) - [SDR CA090210009](https://openairdocs.org/sdr/CA090210009), Feb 4, 2009: Piper PA31350. DRIVE SHAFT. SHEARED. AFTER INSTALLING THE PUMP ON THE AIRCRAFT THE PUMP SEIZED AND THE DRIVE SHEARED. THE PUMP WAS AN OVERHAULED PUMP. - [SDR CA090210004](https://openairdocs.org/sdr/CA090210004), Feb 3, 2009: Piper PA31350. SHAFT. SHEARED. ON TAKEOFF THE RT PNEUMATIC SOURCE LIGHT ILLUMINATED. THE AIRCRAFT REJECTED TAKEOFF AND RETURNED TO BLOCKS. MAINTENANCE - [SDR FFKA01272008001](https://openairdocs.org/sdr/FFKA01272008001), Jan 27, 2009: Piper PA32R300. PUMP. FAILED. PILOT REPORTED A VACUUM FAILURE WHILE EN ROUTE TO KCAE. (N38305) - [SDR BSYA2009007](https://openairdocs.org/sdr/BSYA2009007), Jan 26, 2009: Piper PA31350. PLUG. MISSING. WHILE TROUBLESHOOTING AN ALTERNATOR PROBLEM MAINTENANCE FOUND THAT AT 2000 RPM ONLY HAD 3 INCH VAC PRESSURE. FOUND THE V (N3587P) - [SDR CA081205007](https://openairdocs.org/sdr/CA081205007), Dec 4, 2008: Cessna 414A. LINE. CORRODED. (CAN) UPON REACHING CRUISE FLIGHT AND ACTIVATING AIRFRAME PNEUMATIC DE-ICE SYSTEM, THE BOOTS WOULD REMAIN PARTIALLY TO M - [SDR 2008FA0000739](https://openairdocs.org/sdr/2008FA0000739), Nov 3, 2008: Cessna 172M. ADAPTER. DAMAGED. AIRCRAFT HAD A FRESHLY OVERHAULED ENGINE INSTALLED AND WAS MAKING ITS FIRST FLIGHT. DURING CRUISE, IN VFR CONDITIONS, TH (N30830) - [SDR CA080822011](https://openairdocs.org/sdr/CA080822011), Jul 25, 2008: Piper PA31. PUMP. SEIZED. (CAN) DURING INSPECTION THE LT ENGINE VACUUM PUMP FOUND SEIZED, REPLACED. - [SDR 2008FA0000264](https://openairdocs.org/sdr/2008FA0000264), Apr 2, 2008: Beech 58. PUMP. FAILED. VACUUM PUMP FAILED TO DEVELOP ANY AIR OUTPUT UPON INSTALLATION. REMOVED PUMP AND INSPECTED, SUSPECT VANES ARE NOT SLIDIN (N8050U) - [SDR BSYA20080003](https://openairdocs.org/sdr/BSYA20080003), Jan 15, 2008: Beech 58. PUMP. FAILED. AFTER TAKEOFF OUT OF BDL LOST RIGHT VAC PUMP, RETURNED TO BDL. MAINTENANCE CHANGED RIGHT VAC PUMP, OPS CHECKS GOOD. (N3695V) - [SDR CA071203001](https://openairdocs.org/sdr/CA071203001), Dec 2, 2007: Piper PA31310. VANE. BROKEN. (CAN) DURING A PRE-MAINTENANCE GROUND RUN, IT WAS NOTED THAT THE RT AIR PUMP WAS INDICATING INOPERATIVE DURING INSPECTIO - [SDR 2007FA0000981](https://openairdocs.org/sdr/2007FA0000981), Nov 3, 2007: Cessna 208B. RELIEF VALVE. SEPARATED. RELIEF VALVE FOR BLEED AIR PNEUMATIC SYSTEM END WASHER AND CAP SEPARATED FROM VALVE AND LAYING IN BOTTOM OF COWLING. SUS (N1232Y) - [SDR CA071023007](https://openairdocs.org/sdr/CA071023007), Oct 22, 2007: Piper PA31. PUMP. INOPERATIVE. (CAN) WHILE PERFORMING AN COMPRESSION TEST, THE ENGINEER HEARD A SQUEAKING AS THE PROP WAS BEING ROTATED. THE SOURCE WAS - [SDR DUFA081607001](https://openairdocs.org/sdr/DUFA081607001), Aug 16, 2007: Cessna 402B. DRIVE ASSY. SHEARED. WHILE IN CRUISE FLIGHT, THE PILOT NOTICED OIL STREAMING FROM THE TOP OF THE LT ENGINE COWL. THE OIL PRESSURE WAS STILL I (N3796C) - [SDR 01302007](https://openairdocs.org/sdr/01302007), Jan 30, 2007: Gulstm 500B. PUMP. DAMAGED. LEFT VACUUM PUMP LOOSENED FROM ENGINE AND CAUSED A LOOSE OF OIL PRESSURE. THE VACUUM PUMP DRIVE WAS DAMAGED IN THAT THE (N610BW) - [SDR 155SW111506](https://openairdocs.org/sdr/155SW111506), Nov 15, 2006: Cessna 414. PUMP. LEAKING. APPROXIMATELY 40 MINUTES INTO A FLIGHT FROM CLARKSBURG, WV (KCKB) TO ST. MARY'S COUNTY, MD (2W6), OIL WAS OBSERVED ON TH (N155SW) - [SDR 2007FA0000007](https://openairdocs.org/sdr/2007FA0000007), Oct 30, 2006: Grob G120A. PUMP. WORN. DURING FLIGHT SUCTION PRESSURE READING DROPPED TO ZERO, DURING FURTHER TROUBLESHOOTING, TECH FOUND THE ENGINE DRIVEN AIR (N865AF) All 292: https://openairdocs.org/jasc/3710/reports.md ## Other codes in chapter 37 - [JASC 3700](https://openairdocs.org/jasc/3700): Vacuum System (33 reports) - [JASC 3720](https://openairdocs.org/jasc/3720): Vacuum Indicating System (6 reports) - [JASC 3797](https://openairdocs.org/jasc/3797): Vacuum System Wiring (4 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.