# JASC 3600: Pneumatic System

- Type: JASC system/component code (FAA)
- ATA chapter: 36 Pneumatic
- Title in the code table: PNEUMATIC SYSTEM
- Service difficulty reports: 508
- FAA code table: https://www.faa.gov/sites/faa.gov/files/JASC_Code.pdf#page=42
- Page: https://openairdocs.org/jasc/3600

## What it covers

The units and components which deliver large volumes of compressed air from a power source to connecting points for other systems such as air conditioning, pressurization, deicing, etc.

## Service difficulty reports (508, newest 50)

- [SDR AALA202609093868](https://openairdocs.org/sdr/AALA202609093868), Sep 6, 2026: Airbus A319112. REGULATOR VALVE. FAULTED. AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED AND THE AIRCRAFT DIVERTED TP PIT DUE TO THE FLIGHT CREW REPORTING AT FL (N741UW)
- [SDR TAMF20260902060](https://openairdocs.org/sdr/TAMF20260902060), Aug 31, 2026: Airbus A330243. WARNING MESSAGE. ILLUMINATED. DURING TAKEOFF ROLL AT LAX, AIRCRAFT GENERATED AN ECAM , BLEED ABNORMAL / BLEED CONFIG WARNING AT APPROX 60 KNOTS, RESUL (N330QT)
- [SDR SWAA2026082568398](https://openairdocs.org/sdr/SWAA2026082568398), Aug 18, 2026: Boeing 7378H4. SENSE LINE. FAULTED. ATB DUE TO RH LOW BLEED & LT PACK FLUCTUATING. O/W LANDING._ R & R NR 2 ENGINE PRECOOLER BRAIDED SENSE LINE PER MM 36-12 (N8673F)
- [SDR VNAA2026081923103](https://openairdocs.org/sdr/VNAA2026081923103), Aug 17, 2026: Cndair CL6002C10. CLAMP. LOOSE. LEFT BLEED DUCT WARNING MSG IN FLIGHT FOLLOWED BY L BLEED CAUTION MSG AND A CABIN ALT MSG AT 10K FT. HAZE IN CABIN. PERF (N530EA)
- [SDR N6WA2026081702](https://openairdocs.org/sdr/N6WA2026081702), Aug 14, 2026: Cndair CL6002C11. SLEEVE. UNSECURE. LEFT BLEED DUCT WARNING. RESECURED HASOV HEAT SLEEVE IAW AMM 21-61-08. NO LEAKS NOTED AT THIS TIME. OPS CHECKED GOOD. (N577GJ)
- [SDR CALA2026071617839](https://openairdocs.org/sdr/CALA2026071617839), Jul 14, 2026: Boeing 737924ER. BUSHING. MISSING. BLEED TRIP OFF LIGHT COMES ON DURING CLIMB LIGHT NO. 2 DEBRIEF CREW. #2 ENG BLEED TRIP OFF LIGHT CAME ON DURING CLIMB AT (N68836)
- [SDR ABXA20260622275](https://openairdocs.org/sdr/ABXA20260622275), Jun 22, 2026: Boeing 767328. PNEUMATIC SYSTEM. FAULTED. DURING TAXI, APU FAULT NO PNEUMATIC PRESSURE. RETURNED TO GATE (BTB). MX PROCEDURES CW. PLACARD INSTALLED. MBCB 7/2/26.  (N1499A)
- [SDR 2026FA0000486](https://openairdocs.org/sdr/2026FA0000486), Jun 3, 2026: Airbus A320214. CONTROLLER. FAULTED. DURING CLIMB AIR ENG BLEED 1+2 FAULT. IAW AMM 36-11-42-04 CONF 00 THE BLEED AIR PRECOLLER RH ENG WAS REMOVED AND REPLACE (N567AV)
- [SDR CNMA2026040004](https://openairdocs.org/sdr/CNMA2026040004), Apr 21, 2026: Boeing 76733A. PRESSURE VALVE. INOPERATIVE. L HPSOV EICAS MSG, AND L BLEED LIGHT ILLUMINATED (N351AX)
- [SDR CALA2026032014714](https://openairdocs.org/sdr/CALA2026032014714), Mar 18, 2026: Airbus A319131. SEAL. WORN. AIR BLEED MSG - DUE TO HISTORY OF AIR BLEED MSG, AVIATAR IS SHOWING L WING LOOP A 36-22-16 DURING CRUISE FLT DO THE FAUL (N851UA)
- [SDR ABXA20260312102](https://openairdocs.org/sdr/ABXA20260312102), Mar 12, 2026: Boeing 767223. SHUTOFF VALVE. DEFECTIVE. DURING CRUISE, CABIN ALT WARNING PRESSURIZATION MODE AUTO 1 AND RT ENGINE BLEED MSG. CREW DONNED O2 MASK AND DECLARED AN (N312AA)
- [SDR YENA2026011400036](https://openairdocs.org/sdr/YENA2026011400036), Jan 14, 2026: Airbus A321271NX. WARNING MESSAGE. ILLUMINATED. FLT # 2009 JFK-JFK (ETOPS). "REJECTED TAKE OFF APPROXIMATELY 60 KIAS DUE TO AIR -R WING LEAK.; REMOVED & REPLACED 1EA. B (N4064J)
- [SDR YENA2026010200008](https://openairdocs.org/sdr/YENA2026010200008), Jan 4, 2026: Airbus A321271NX. RELAY. FAULTED. FLT 872 SLC-JFK (ETOPS) PER TECH SUPPORT REQUEST REPLACE RELAY-APURV CMND (21HV).; REMOVED AND REPLACED RELAY APURV CMND (N2142J)
- [SDR DALA2025122309355](https://openairdocs.org/sdr/DALA2025122309355), Dec 17, 2025: Airbus BD5001A11. SHUTOFF VALVE. FAULTED. MISC - DECLARED EMERGENCY DUE TO "R BLEED FAIL" AND "ALPHA LIMIT" MESSAGES WHILE IN ICING. REPLACED THE HIGH PRESSURE SH (N308DU)
- [SDR CALA2025112811565](https://openairdocs.org/sdr/CALA2025112811565), Nov 24, 2025: Boeing 7379. SHUTOFF VALVE. FAULTED. ENGINE ANTI-ICE AMBER LIGHT ON NR 2 ENGINE CAME ON. PER CREW ISSUE PRESENTED DURING CLIMB. REF FIM 36-21011 PILOT TRIED  (N47412)
- [SDR 2025FA0000748](https://openairdocs.org/sdr/2025FA0000748), Nov 7, 2025: Lear 60LEAR. B-NUT. LOOSE. DEPARTED KCPP HEADING TO KSDL. IN CRUISE ABOUT 1.5 HRS INTO FLT, CAPTAIN REPORTED DUAL BLEED LIGHTS CAME ON INDICATING A (N317MP)
- [SDR SWIA202509220001](https://openairdocs.org/sdr/SWIA202509220001), Sep 20, 2025: Cndair CL6002B19. WARNING MESSAGE. ILLUMINATED. RIGHT 14TH DUCT WARNING MESSAGE WHEN CLIMBING THROUGH ABOUT 8000FT. RAN QRH. MESSAGE CLEARED. RETURNED TO ORD. (FLIGHT 5 (N218PS)
- [SDR SWIA20250922019](https://openairdocs.org/sdr/SWIA20250922019), Sep 19, 2025: Cndair CL6002C10. LOOP. FAULTED. LEFT BLEED DUCT WARNING, SWITCHED TO LT BLEED DUCT CAUTION. RAN QRH. (FLIGHT 5322) NO LT BLEED DUCT WARNING NOR CAUTION  (N790SK)
- [SDR SWIA2025091900008](https://openairdocs.org/sdr/SWIA2025091900008), Sep 18, 2025: Cndair CL6002B19. DUCT. WARNING MESSAGE. R 10TH DUCT WARNING MSG DURING CLIMB AT 3500FT, APPLIED THE QRH MSG DISAPPEARED, RETURNED TO KORD WITH NO FURTHER ISSUE. (N218PS)
- [SDR CALA2025091108792](https://openairdocs.org/sdr/CALA2025091108792), Sep 7, 2025: Boeing 75733N. VALVE. MALFUNCTIONED. LEFT ENG HIGH STAGE EICAS C, THE LEFT ENGINE HPSOV IS CLOSED BECAUSE THE HIGH STAGE BLEED PRESSURETOO HIGH. CREW ABORTED (N77865)
- [SDR 2025FA0000530](https://openairdocs.org/sdr/2025FA0000530), Jul 27, 2025: Lear 60LEAR. SEAL. WORN. ON 7/27/2025, N276BG DEPARTING KELP FOR A PASSENGER PICKUP IN KLRU, THE RH ENGINE BLEED LIGHT CAME ON INDICATING A LEAK  (N276BG)
- [SDR CALA2025072806985](https://openairdocs.org/sdr/CALA2025072806985), Jul 24, 2025: Boeing 767424ER. SENSOR. FAULTED. R ENG BLEED OFF ICAS WIT BLEED OFF LIGHT ON OVERHEAD ADDED PICS OF ASCTU RT ENG FAULT HISTORY PER CREW DEBRIEF, BLEED OF (N67052)
- [SDR VNAA2025072311101](https://openairdocs.org/sdr/VNAA2025072311101), Jul 17, 2025: Cndair CL6002C10. DUCT. LEAKING. L BLEED DUCT CAUTION MSG IN FLIGHT. / UPON LEAK CHECK FOUND LEAK AT LH CONNECTOR DUCT FWD OF FLOW CONTROL VALVE AND AT A (N546FF)
- [SDR CALA2025060305223](https://openairdocs.org/sdr/CALA2025060305223), Jun 1, 2025: Boeing 7378. SHUTOFF VALVE. FAULTED. ENG ANTI-ICE LIGHT ILLUMINATED IN FLIGHT SEE LOG PAGE 5050989. PRSOV AND INTERMEDIATE MANIFOLD PRESSURE SENSOR REMOVED A (N17279)
- [SDR AALA202505197868](https://openairdocs.org/sdr/AALA202505197868), May 15, 2025: Boeing 737823. SHUTOFF VALVE. SEIZED. AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS NOT DECLARED DUE TO: DURING CLIMB LEFT BLEED TRIP OFF ANNUNCIATOR ILLUMINATED, L (N935AN)
- [SDR VNAA2025051311101](https://openairdocs.org/sdr/VNAA2025051311101), May 12, 2025: Cndair CL6002C10. CLAMP. LOOSE. L BLEED DUCT WARNING MSG. / INSPECTED LOOP IN AEB AND FOUND BLUE ADEL CLAMP THAT HOLD BOTH LOOPS IN PLACED EXTREMELY LOO (N527EA)
- [SDR N6WA2025042401](https://openairdocs.org/sdr/N6WA2025042401), Apr 21, 2025: Cndair CL6002C11. DUCT. CRACKED. L BLEED DUCT MASTER WARNING WITH CABIN PRESSURE DROP. INSPECTED AN FOUND BLEED DUCTS CRACKED AT THE RH PACK PRECOOLER BY (N569GJ)
- [SDR DALA2025041502938](https://openairdocs.org/sdr/DALA2025041502938), Apr 13, 2025: Boeing 737932ER. LINE. DEFECTIVE. SHIP 3801 -MISC/DE- DECLARED EMERGENCY ON DESCENT TO DTW DUE TO RIGHT ENGINE LOW DUCT PRESSURE AND ENGINE VIBRATION. COR (N801DZ)
- [SDR ANCF20250330005](https://openairdocs.org/sdr/ANCF20250330005), Mar 30, 2025: Airbus A320214. SENSE LINE. LEAKING. ENGINE 2 BLEED FAULT IN FLIGHT DUE TO PNEUMATIC AIR LEAK WAS REMOVED AND REPLACED THE SENSE LINE BTW THE PRV AND THE PYL (N862AV)
- [SDR AALA202503271775](https://openairdocs.org/sdr/AALA202503271775), Mar 24, 2025: Airbus A320232. DUCT. BLOWN. AIRCRAFT WAS GROUNDED: AFTER TAKEOFF NAC TEMP FLASHING ON RIGHT ENG. TEMP UP TO 380.EGT RIGHT ENGINE 630. NAC TEMP REMAI (N650AW)
- [SDR CALA2025031902943](https://openairdocs.org/sdr/CALA2025031902943), Mar 16, 2025: Boeing 737824. VALVE. FAULTY. DUCT PRESSURE INDICATION LOW (BELOW 18 PSIG) DURING TAKEOFF, CLI MB AND CRUISE; THE ENGINE IS THE BLEED SOURCE PER TECH  (N37277)
- [SDR JJBA20250318017](https://openairdocs.org/sdr/JJBA20250318017), Mar 14, 2025: Emb EMB145XR. SUPPORT BRACKET. CRACKED. RH PYLON, PRECOOLER FWD SUPPORT BRACKET FOUND CRACKED. RH PYLON PRECOOLER FWD SUPPORT BRACKET REPLACED. (N24128)
- [SDR GTIA2025031038793](https://openairdocs.org/sdr/GTIA2025031038793), Mar 9, 2025: Airbus A321231. SEAL. FAULTY. AIR WING LEAK R PASSING THROUGH 27K FEET-TIGHTENED CLAMP ON PACK 2 IAW AMM 21-52-41. R&R PERI SEALS ON WING BLEED AIR SY (N667NK)
- [SDR HALA20250227073](https://openairdocs.org/sdr/HALA20250227073), Feb 26, 2025: Airbus A330343. SOLENOID. NO TEST. ETOPS - PRV SOLENOID TEST FAILED- REF W/O # 340011 AND T/C # E1128-330-36-026-RH. REMOVED AND REPLACED PRV SOLENOID VALV (N5879K)
- [SDR AALA202412103057](https://openairdocs.org/sdr/AALA202412103057), Dec 8, 2024: Airbus A321231. SEAL. LEAKING. AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED INBOUND INTO SEA DUE TO THE FLIGHT CREW REPORTING A LEFT WING BLEED AIR (N140AN)
- [SDR N6WA2024120101](https://openairdocs.org/sdr/N6WA2024120101), Nov 27, 2024: Cndair CL6002C11. SENSOR. OUT OF POSITION. R BLEED DUCT MASTER WARNING INFLIGHT. FOUND MT204 TOUCHING AIRFRAME. ADJUSTED POSITION IAW CRJ AMM 36-21-00 AND PERFORME (N557GJ)
- [SDR 2NEA20241106120](https://openairdocs.org/sdr/2NEA20241106120), Nov 6, 2024: Lear 35A. MODULATING VALVE. MALFUNCTIONED. AFTER TAKEOFF AND GEAR RETRACTION THE FLIGHT CREW NOTED SMOKE EMITTING FROM THE CONDITIONED AIR DUCTS, AND NUMBER 1 ENGI (N220CK)
- [SDR CALA2024110501021](https://openairdocs.org/sdr/CALA2024110501021), Nov 2, 2024: Boeing 767424ER. SHUTOFF VALVE. FAULTY. ON TAKEOFF AT 1000 FT EICAS L ENG BLEED PER TOMC ATTEMPTED RESE T. BLEED OK NOW LOCKED FOR FIX CONFIRMATION TOMC UNLOCKS (N76054)
- [SDR QXEA2024110400253](https://openairdocs.org/sdr/QXEA2024110400253), Oct 31, 2024: Emb ERJ170200LR. GASKET. MISSING. FLIGHT 2041. ON CLIMB OUT AROUND 18,000 FT BLEED 2 LEAK CAUTION MSG. RAN CHECKLIST. MESSAGE REMAINED. ON LANDING BLEED 2 (N622QX)
- [SDR CALA2024101700848](https://openairdocs.org/sdr/CALA2024101700848), Oct 13, 2024: Boeing 737924ER. SHUTOFF VALVE. FAULTED. ENGINE 1 OVERHEAT LIGHT ON CLIMBOUT. SWITCH WAS IN A POSITION W B LOOP ON MEL. REPLCD. ENG AND APU FIRE CONT. PANEL REF  (N66837)
- [SDR YENA2024101401345](https://openairdocs.org/sdr/YENA2024101401345), Oct 12, 2024: Airbus A321271N. SENSE LINE. FAILED. FLT#20, LHR-JFK. (ETOPS) ' ( CLASS II MAINTENANCE MESSAGES DISPLAYED ON ECAM STATUS PAGE OF ECAM SYSTEM DISPLAY 1) FAULT (N4077J)
- [SDR ABXA20241012187](https://openairdocs.org/sdr/ABXA20241012187), Oct 12, 2024: Boeing 76737D. ISOLATION VALVE. FAULTED. DURING TAXI R ISLN VALVE LIGHT ON, NO AIR FOR START AC RETURNED TO GATE AND MAITENANCE GROUNDED AC. MTX CYCLED RIGHT ISO (N1327A)
- [SDR YEN20240930003](https://openairdocs.org/sdr/YEN20240930003), Sep 27, 2024: Airbus A321271N. COMPUTER. FAILED. FLT#8417, BOS-JFK. (ETOPS) 'BMC FUNCTIONAL TEST NOT RESPONDING; REMOVED AND REPLACED BMC2 COMPUTER IAW AMM 36-11-00. OPS (N4058J)
- [SDR YENA2024092701308](https://openairdocs.org/sdr/YENA2024092701308), Sep 27, 2024: Airbus A321271N. COMPUTER. FAILED. FLT#8417, BOS-JFK. (ETOPS) 'BMC1 FUNCTIONAL TEST NOT RESPONDING; REMOVED AND REPLACED BMC2 COMPUTER IAW AMM 36-11-00. OP (N4058J)
- [SDR YENA2024092701307](https://openairdocs.org/sdr/YENA2024092701307), Sep 27, 2024: Airbus A321271N. COMPUTER. FAILED. FLT#8417, BOS-JFK. (ETOPS) 'BMC1 FUNCTIONAL TEST NOT RESPONDING; REMOVED AND REPLACED BMC1 COMPUTER IAW AMM 36-11-00. OP (N4058J)
- [SDR SWIA202409230001](https://openairdocs.org/sdr/SWIA202409230001), Sep 20, 2024: Cndair CL6002C10. DUCT. WARNING MESSAGE. DURING CLIMB AROUND FL 220 RECEIVED L BLEED DUCT WARNING MESSAGE (FLIGHT 4841 - FILED CLOSED) TROUBLESHOT L BEED DUCT WA (N772SK)
- [SDR 2024FA0000671](https://openairdocs.org/sdr/2024FA0000671), Aug 29, 2024: Bombdr BD1001A10. PIN. BROKEN. ON CLIMB OUT AROUND 17000', 'L BLEED LEAK' CAS POSTED. (N311GS)
- [SDR GTIA2024082438324](https://openairdocs.org/sdr/GTIA2024082438324), Aug 20, 2024: Airbus A320232. CABLE. OPEN. AFTER T/O AIR L WING LEAK DET FAULT.-PERFORMED TSM 36-22-00. FOUND ON BMC 1 OPEN LINE ON PIN 3B &4B. R&R INTER CONNECTIN (N611NK)
- [SDR HALA20240716193](https://openairdocs.org/sdr/HALA20240716193), Jul 15, 2024: Airbus A321271N. DUCT. CONTAMINATED. ATB - AFTER TAKEOFF PRIOR TO THRUST REDUCTION, BURNING ELECTRICAL AND CHEMICAL SMELL OBSERVED IN THE COCKPIT. TAKEOFF TH (N227HA)
- [SDR CALA2024070301958](https://openairdocs.org/sdr/CALA2024070301958), Jul 3, 2024: Boeing 737824. SENSE LINE. CRACKED. AT CRUISE RT DUCT PRESS URE WENT TO 11 PSI 41LT STAYED LOW DURI NG DESENT IDLED BOTH ENGINES. #2 ENGINE PRODUCED BELOW 0 (N77258)

All 508: https://openairdocs.org/jasc/3600/reports.md

## Other codes in chapter 36

- [JASC 3610](https://openairdocs.org/jasc/3610): Pneumatic Distribution System (7,149 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)

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