# JASC 3610: Pneumatic Distribution System - Type: JASC system/component code (FAA) - ATA chapter: 36 Pneumatic - Title in the code table: PNEUMATIC DISTRIBUTION SYSTEM - Service difficulty reports: 7,148 - FAA code table: https://www.faa.gov/sites/faa.gov/files/JASC_Code.pdf#page=42 - Page: https://openairdocs.org/jasc/3610 ## What it covers Components and parts other than the regulator and shutoff valves delivering large volumes of compressed air from a power source to the control valves of using systems such as conditioning, pressurization. Doesn't include engine and airfoil anti-icing/deicing systems. Typical parts are regulator valve, actuator, duct, ducts valves, manifold, clamp, flow venturi, bellows, wye duct, check valve. ## Service difficulty reports (7,148, newest 50) - [SDR JJBA20261021006](https://openairdocs.org/sdr/JJBA20261021006), Oct 20, 2026: Emb EMB145XR. VALVE. INOPERATIVE. ON CLIMBOUT AT 12000`, A BLEED LEAK 1 WARNING MESSAGE ON THE EICAS AND BUTTON. LEVELED OFF AT 15000` & FOLLOWED QRH THEN (N14198) - [SDR YENA2026101900990](https://openairdocs.org/sdr/YENA2026101900990), Oct 17, 2026: Airbus BD5001A11. SHUTOFF VALVE. FALSE INDICATION. FLT#953, JFK-DJT-RTF. 36 L BLEED FAIL. L PRESS REG SOV INOP. ( ENGINE BLEED PRESSURE REGULATING SHUTOFF VALVE (PRSOV) LE (N3284J) - [SDR UIEA2026101600989](https://openairdocs.org/sdr/UIEA2026101600989), Oct 16, 2026: Boeing 74745EF. CONTROLLER. FAULTED. BLD 1 OVHT/PRV CAUTION(

REPLACED PRV CONTROLLER AND ENG 1 BLEED SYSTEM. OPS CHECK NORMAL IAW AMM 36-11-20

) (N485MC) - [SDR CALA2026101520384](https://openairdocs.org/sdr/CALA2026101520384), Oct 13, 2026: Airbus A321271NX. VALVE. FAILED. AVIATAR -AVI- ALERT- LEFT BLEED TEMPERATURE- IS LOW (63 C) COMPARED TO RIGHT (188 C). UPON INSPECTION OF FAN AIR VALVE F (N14509) - [SDR YENA2026101200946](https://openairdocs.org/sdr/YENA2026101200946), Oct 11, 2026: Airbus BD5001A11. CONTROL VALVE. FAILED. FLT#2098, FLL-FLL AIR TURNBACK. ON T/O R BLEED FAIL CAUTION EICAS PRECAUTIONARY AIRRETURN ACCOMPLISHED DUE TO L BLEED BE (N3241J) - [SDR AALA202610108445](https://openairdocs.org/sdr/AALA202610108445), Oct 9, 2026: Airbus A319112. CLAMP. LEAKING. AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED AND THE AIRCRAFT RETURNED TO CLT DUE TO THE FLIGHT CREW REPORTING AN AI (N717UW) - [SDR I5PA2026100628603](https://openairdocs.org/sdr/I5PA2026100628603), Oct 6, 2026: Boeing 757256. SHUTOFF VALVE. FAULTED. ETOPS SIGNIFICANT REPORT LEFT ENGINE BLEED OFF ON CLIMB - R & R LEFT ENGINE HPSOV PER AMM (N286GB) - [SDR DALA2026100605525](https://openairdocs.org/sdr/DALA2026100605525), Oct 2, 2026: Boeing 75726D. CONTROL CARD. FAULTED. DIV TO DTW DUE TO RIGHT DUCT LEAK MESSAGE REQUIRING RIGHT BLEED OFF WITH ICING CONDITIONS ENROUTE. T/S IAW FIM 36-10-00. (N819DX) - [SDR SIMA20260929001](https://openairdocs.org/sdr/SIMA20260929001), Sep 29, 2026: Emb ERJ170200LR. CONTROLLER. FAILED. BLEED 2 OVER PRESSURE, QRH RAN DID NOT EXTINGUISH, BLEED SHOWED 114 PSI WITH BLEED 2 OFF RTF TO DFW. DECLARED AN EMERGEN (N236NN) - [SDR YENA2026093000918](https://openairdocs.org/sdr/YENA2026093000918), Sep 29, 2026: Airbus A321271NX. SEAL. LEAKING. FLT 73, JFK - EDI. GROUND VERIFICATION REQUIRED FOR AIR RH WING LEAK. LEAK CHECK FOR WAI TAPPING SEALS RH WING (N2199J) - [SDR YENA2026093000915](https://openairdocs.org/sdr/YENA2026093000915), Sep 29, 2026: Airbus A321271NX. SEAL. DAMAGED. FLT 73, JFK-JFK. (ETOPS), ECAM AIR R WING LEAK ; INSPECTED WAI TAPPING SEAL AND FOUND SEAL TO BE DAMAGED. R & R WAI TAPP (N2199J) - [SDR U5QA202609280181](https://openairdocs.org/sdr/U5QA202609280181), Sep 28, 2026: Bombdr BD1001A10. SEAL. DAMAGED. ON INITIAL CLIMB CREW REPORTED A RED RT PYLON LEAK MESSAGE POSTED. REMOVED AND REPLACED FWD AND AFT E-SEALS CONDITION: N (N320JE) - [SDR YENA2026093000914](https://openairdocs.org/sdr/YENA2026093000914), Sep 28, 2026: Airbus A321271NX. O-RING. MISSING. FLT 387, BOS-BOS. (ETOPS) AIR L WING LEAK ECAM APPROXIMATELY 8 MINUTES AFTER STARTING NR 1 ENGINE ; FOUND CLAMP FROM NR (N4062J) - [SDR DALA2026100105462](https://openairdocs.org/sdr/DALA2026100105462), Sep 27, 2026: Boeing 757351. CLAMP. FAILED. DIV- TO MSP DUE TO LEFT DUCT LEAK MESSAGE REQUIRING LEFT BLEED OFF WITH ICING CONDITIONS ENROUTE. REPLACED FAILED DUCT C (N582NW) - [SDR SIMA20260925004](https://openairdocs.org/sdr/SIMA20260925004), Sep 25, 2026: Emb ERJ170200LR. REGULATOR. FAILED. APPROXIMATELY 2000FT EICAS MSG BLEED 2 OVER PRESSURE SHOWED UP. WE RAISED THE FLAPS, AND RAN THE QRH. THE ANNUNCIATION D (N236NN) - [SDR SIMA20260925005](https://openairdocs.org/sdr/SIMA20260925005), Sep 25, 2026: Emb ERJ170200LR. SHUTOFF VALVE. OPEN. HAD PACK 2 MEL. FOLLOWED MEL PROCEDURE FOR THAT WITH ECS OFF AND APU ON. ON TAKEOFF 1000-1500 AGL, BLEED 2 OVERPRESSURE (N236NN) - [SDR 2026FA0000784](https://openairdocs.org/sdr/2026FA0000784), Sep 23, 2026: Lear 60LEAR. SEAL. WORN. DEPARTING KDPA THE CREW NOTICED AND REPORTED DUAL PRESSURIZATION BLEED AIR LIGHTS HAD ILLUMINATED. THEY ELECTED TO RETUR (N696RB) - [SDR N6WA2026092404](https://openairdocs.org/sdr/N6WA2026092404), Sep 22, 2026: Cndair CL6002C11. SHUTOFF VALVE. FAULTED. LEFT ENG BLEED CAUTION (15PSI) ON TAKE OFF. O.O KTS. R & R PRSOV IAW AMM 36-12-01 OPS CHECKED GOOD. (N513GJ) - [SDR I5PA2026092168812](https://openairdocs.org/sdr/I5PA2026092168812), Sep 21, 2026: Boeing 757230. VALVE. FAULTY. ETOPS SIGNIFICANT REPORT, LT ENGINE PNEUMATIC HEALTH CHECK REQUIRED - PERFORMED PNEUMATIC HEALTH CHECK PER AMM, FOUND HP (N688SL) - [SDR YENA2026092100862](https://openairdocs.org/sdr/YENA2026092100862), Sep 20, 2026: Airbus BD5001A11. CONTROL VALVE. FAILED. FLT 1797, ATL-FLL. LEFT BLEED FAIL AFTER TAKE-OFF. EGT 584. R & R NR 1 ENG PRV IAW AMP 36-11-01. OPS CK / LK CK GOOD. (N3251J) - [SDR DALA2026092205286](https://openairdocs.org/sdr/DALA2026092205286), Sep 19, 2026: Airbus A321271NX. SEAL. LEAKING. ATO - AT 60 KTS DUE TO AIR R WING LEAK ECAM WARNING. FOUND SEAL BLOWN OUT BETWEEN OZONE CONVERTER (101HM) AND FLOW CONTR (N528DE) - [SDR DALA2026091505153](https://openairdocs.org/sdr/DALA2026091505153), Sep 15, 2026: Boeing 7378EH. SHUTOFF VALVE. FAULTED. ATB- RETURNED TO MIA DUE TO ABSENCE OF BLEED PRESSURE FROM RT ENGINE. REPLACED RT PRSOV, BLEED OPS CHECK GOOD. REPLACED (N776DE) - [SDR AALA202609154957](https://openairdocs.org/sdr/AALA202609154957), Sep 11, 2026: Boeing 737823. REGULATOR. FLUCTUATES. AIRCRAFT WAS GROUNDED: DURING CLIMB OUT LEFT DUCT PRESSURE WAS 5PSI AND RIGHT 35PSI. PRESSURIZATION WAS FLUCTUATING BETW (N961NN) - [SDR HNAA2026091100857](https://openairdocs.org/sdr/HNAA2026091100857), Sep 11, 2026: Emb EMB145LR. BLEED AIR SYS. LEAKING. TROUBLESHOT BLEED NR 2 LEAK IN FLIGHT AT 6K FT. INSP PK 2 DUCTS IAW AMM 21-51-14, FND SLEEVE ON PK 2 TORN. RAN ACFT AT T (N694AE) - [SDR R61A2026091000260](https://openairdocs.org/sdr/R61A2026091000260), Sep 10, 2026: Emb ERJ170100SE. BLEED AIR SYS. FAILED. BLEED 2 FAIL IN ICING CONDITIONS WITH BLEED 1 ON MEL. RAN QRH, MESSAGE CLEARED. DECLARED EMERGENCY, LANDED WITHOUT INCID (N861RW) - [SDR YENA2026091100791](https://openairdocs.org/sdr/YENA2026091100791), Sep 9, 2026: Airbus A321271NX. WARNING MESSAGE. ILLUMINATED. FLT 224, LAX-JFK. (ETOPS) AIR BLEED CLASS II MAINTENANCE MESSAGE ( CLASS II MAINTENANCE MESSAGES DISPLAYED ON ECAM STATU (N2193J) - [SDR ASAA2026090968622](https://openairdocs.org/sdr/ASAA2026090968622), Sep 9, 2026: Boeing 7378. LRU. FAULTED. MAINT LIGHT ILLUMINATED. GROUNDED - YES. FOUND MAINTENANCE MESSAGE 36-10170 "IASC (BLEED) HAS NO ENGINE - 1 PS3 AND T3 D (N846AK) - [SDR UIEA2026090700857](https://openairdocs.org/sdr/UIEA2026090700857), Sep 7, 2026: Boeing 74747UF. SHUTOFF VALVE. BROKEN. EICAS BLEED 4 ON TAKE OFF ROLL. DURING INSPECTION OF HPSOV, FOUND TERMINAL NR 1 ON HPSOV BROKEN. SPLICED NEW TERMINAL IA (N498MC) - [SDR IPXA2026090618249](https://openairdocs.org/sdr/IPXA2026090618249), Sep 6, 2026: Boeing 76734AF. WARNING MESSAGE. ILLUMINATED. AIR TURN BACK, LT ENG HPSOV EICAS MSG ON TAKEOFF ROLL. ACCOMPLISHED QRH PROCEDURE, BUT BLEED LIGHT REMAINED ILLUMINATED. (N357UP) - [SDR UIEA2026090500853](https://openairdocs.org/sdr/UIEA2026090500853), Sep 5, 2026: Boeing 74746NF. SHUTOFF VALVE. FAULTED. BLEED 3 EICAS DURING CLIMB. REMOVED AND REPLACED ENG 3 PRV, OPS CHECK NORMAL AND ENG RUN OK IAW AMM 36-11-19, AMM 71-00- (N451PA) - [SDR ABXA20260903395](https://openairdocs.org/sdr/ABXA20260903395), Sep 3, 2026: Boeing 7673P6. PRIORITY VALVE. FAULTED. LEFT ENG PRV VALVE EICAS MESSAGE ON TAKE OFF. CREW ABORTED TAKEOFF (ATO) AND RETURNED TO THE GATE (BTB). PLACED ON DI IA (N764CK) - [SDR VNAA2026090123901](https://openairdocs.org/sdr/VNAA2026090123901), Aug 30, 2026: Cndair CL6002D24. DUCT. LEAKING. L BLEED DUCT WARNING MSG IN FLIGHT RUN QRH, REMOVED AND REPLACED THE BLEED-AIR CROSSOVER DUCT IAW CRJ 900 AMM 36-19-09-0 (N633NN) - [SDR AALA202609027447](https://openairdocs.org/sdr/AALA202609027447), Aug 29, 2026: Airbus A321231. BLEED AIR SYS. FAULTED. AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED AND THE AIRCRAFT RETURNED TO DFW DUE TO THE FLIGHT CREW REPORTING AIR E (N124AA) - [SDR ABXA20260816363](https://openairdocs.org/sdr/ABXA20260816363), Aug 16, 2026: Boeing 76737D. SENSE LINE. LOOSE. DURING TAXI RT ENG BLEED OFF AND RT PACK OFF EICAS MESSAGE APPEARED A/C RETURNED TO GATE(BTB) AND MTX GROUNDED ACFT AND (N1327A) - [SDR SWIA2026081576867](https://openairdocs.org/sdr/SWIA2026081576867), Aug 15, 2026: Cndair CL6002C10. DUCT. LEAKING. LEFT BLEED DUCT WARNING MESSAGE ON CLIMB OUT AT 12000 (FLIGHT 6234). ON ARRIVAL TO ACFT NO CURRENT WARNING MESSAGE WAS P (N752SK) - [SDR DXTA2026081709281](https://openairdocs.org/sdr/DXTA2026081709281), Aug 14, 2026: Cessna 680A. OVERHEAT SENSOR. FAULTY. DURING CLIMB THROUGH FL250, SELECTED ANTI ICE ALL ON. AFTERWARDS WE BEGAN TO SMELL AN ABNORMAL ODOR CONSISTENT WITH BURN (N551QS) - [SDR HNAA2026081400719](https://openairdocs.org/sdr/HNAA2026081400719), Aug 13, 2026: Emb EMB145LR. PANEL. FAULTED. ON CLIMB OUT BLEED 2 LEAK EICAS MSG. REMOVED RT PACK PANEL AND RT PACK VALVE PANEL FOR VISUAL INSPECTION OF BLEED LINES. (N656AE) - [SDR DALA2026081304648](https://openairdocs.org/sdr/DALA2026081304648), Aug 12, 2026: Airbus A321271NX. DUCT. LEAKING. ATO - AT APPROXIMATELY 10 KNOTS DUE TO AIR L WING LEAK ECAM WARNING. FOUND LEAK AT THE DUCT UPSTREAM OF THE LH WING ANTI (N577DN) - [SDR CALA2026080318219](https://openairdocs.org/sdr/CALA2026080318219), Aug 2, 2026: Boeing 737824. SHUTOFF VALVE. FAULTED. BURNING ODOR ON TO LT DUCT PRESS 85. RT DUCT PRESS 45, PERFORMED WALK AROUND, NO EXTERNAL FINDINGS NOTED. C/W TASK 05-51 (N36272) - [SDR CALA2026080418249](https://openairdocs.org/sdr/CALA2026080418249), Aug 1, 2026: Boeing 767424ER. CONTROLLER. FAULTED. LT BLEED TRIPPED ON FINAL, NO EXISTING FAULTS FOUND IAW FIM 36-00 FAULT TREE 801, FOUND L A429 CTC 1 AND 2 IN FAULT HIST (N67052) - [SDR YENA2026080300646](https://openairdocs.org/sdr/YENA2026080300646), Aug 1, 2026: Airbus A321231. SEAL. MISSING. FLT 1574, LAX-EWR. OIL FUMES IN COCKPIT DURING IDLE DESCENT FIRST DETECTED AROUND 8000 CLOSED ENG 1 BLEED AND IT DISSIPA (N923JB) - [SDR YENA2026080300644](https://openairdocs.org/sdr/YENA2026080300644), Aug 1, 2026: Airbus BD5001A11. BLEED AIR SYS. FAILED. FLT 372, SLC-JFK, AIR TURNBACK TO SLC. ENG 1 BLEED FAIL FAILED AFTER T/O RAN ECL WHICH LIMITED ALT TO 31000 FT, ENGINE B (N3276J) - [SDR IPXA2026080363951](https://openairdocs.org/sdr/IPXA2026080363951), Aug 1, 2026: Boeing 7478F. ENGINE. WARNING MESSAGE. AIR TURN BACK, BLEED 4 ON TAKEOFF AT APPROX 120KTS REPLACED ENG #4 HPSOV IAW. AMM: 36-11-05/401 REV.51 OPS CHECK AND LEA (N630UP) - [SDR IPXA2026080363542](https://openairdocs.org/sdr/IPXA2026080363542), Aug 1, 2026: Boeing 75724APF. DUCT. WARNING MESSAGE. LEFT BLD DUCT LEAK EICAS MSG AT F340. QRH CHECKLIST COMPLETED AND L BLD DUCT LEAK MESSAGE WENT AWAY. PERFORMED FIM 26-90 (N411UP) - [SDR ABXA20260801344](https://openairdocs.org/sdr/ABXA20260801344), Aug 1, 2026: Boeing 76736N. CONTROLLER. MALFUNCTIONED. L ENG BLEED OFF AND L PACK OFF EICAS LIGHT AND L ENG OFF (PNEUMATIC) VALVE LIGHT AND PACK OFF OVERHEAD LIGHT. C/X MC 227 (N1013A) - [SDR AALA202608031575](https://openairdocs.org/sdr/AALA202608031575), Jul 30, 2026: Boeing 737823. SHUTOFF VALVE. INOPERATIVE. AIRCRAFT WAS GROUNDED: ON INITIAL CLIMB OUT AT APPROXIMATELY 3,000 FEET, BLEED 1 BLEED TRIP LIGHT ILLUMINATED. DECESION (N955AN) - [SDR DALA2026072604325](https://openairdocs.org/sdr/DALA2026072604325), Jul 24, 2026: Airbus A321271NX. BLEED AIR SYS. LEAKING. ATO - AT 50KTS DUE TO A RT WING BLEED LEAK MESSAGE. CLASS 2 AIR BLEED MESSAGE APPEARED WITH A RT WING LOOP A MESSAGE AT (N507DZ) - [SDR DALA2026072404323](https://openairdocs.org/sdr/DALA2026072404323), Jul 23, 2026: Boeing 737832. FLEX HOSE. LEAKING. AFTER LANDING, APU STARTED & BOTH PACKS PUT ON APU. AN IMMEDIATE ELECTRICAL ODOR NOTED. APU BLEED SHUTOFF & PACKS PUT BA (N3757D) - [SDR DXTA202607238933](https://openairdocs.org/sdr/DXTA202607238933), Jul 20, 2026: Textrn TEXTRON700. WARNING MESSAGE. ILLUMINATED. BLEED AIR OVERPRESSER R CAS ENG BLEED OFF R CASS. ARRIVED AT AIRCRAFT, PREPARED ACFT FOR MX. POWERED ON ACFT & PERFORMED (N828QS) - [SDR HNAA2026072000598](https://openairdocs.org/sdr/HNAA2026072000598), Jul 18, 2026: Emb EMB145LR. SENSOR. FAILED. BLEED NR 2 OVERTEMP MESSAGE DISPLAYED, FOLLOWED QRH MESSAGE CLEARED. REF 36-11-00-810-1 CMC MSG DUCT SENSOR FAIL W/ NO O (N646AE) All 7,148: https://openairdocs.org/jasc/3610/reports.md ## Other codes in chapter 36 - [JASC 3600](https://openairdocs.org/jasc/3600): Pneumatic System (508 reports) - [JASC 3620](https://openairdocs.org/jasc/3620): Pneumatic Indicating System (1,276 reports) - [JASC 3697](https://openairdocs.org/jasc/3697): Pneumatic System Wiring (222 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.