# JASC 5312: Fuselage Main, Bulkhead

- Type: JASC system/component code (FAA)
- ATA chapter: 53 Fuselage
- Title in the code table: FUSELAGE MAIN, BULKHEAD
- Service difficulty reports: 20,041
- FAA code table: https://www.faa.gov/sites/faa.gov/files/JASC_Code.pdf#page=47
- Page: https://openairdocs.org/jasc/5312

## What it covers

For reports of the main fuselage bulkheads and the associated attach fittings.

## Service difficulty reports (20,041, newest 50)

- [SDR AALA202610158541](https://openairdocs.org/sdr/AALA202610158541), Oct 14, 2026: Boeing 737823. VAPOR BARRIER. CRACKED. AIRCRAFT WAS GROUNDED: 6 INCH CRACK FOUND FWD BULKHEAD LEFT LANDING GEAR WELL. ACCOMPLISHED REPAIR IAW AARD 57-10-10 REP (N905NN)
- [SDR AALA202610152458](https://openairdocs.org/sdr/AALA202610152458), Oct 14, 2026: Boeing 737823. VAPOR BARRIER. CRACKED. AIRCRAFT WAS NOT GROUNDED: AIR LEAK FROM PREVIOUS VAPOR BARRIER REPAIR IN LEFT WHEEL WELL. REF MIC 5074391, EVALUATED AN (N847NN)
- [SDR YENA2026101500978](https://openairdocs.org/sdr/YENA2026101500978), Oct 11, 2026: Airbus A320232. PRESSURE BLKHD. CRACKED. DURING HEAVY MAINTENANCE, REF AEROMAN WO# 2026-228/1. NR# 2026-450769. CRACK INDICATION FOUND ON FR35 LH SIDE FWD FACE T (N558JB)
- [SDR YENA2026101500955](https://openairdocs.org/sdr/YENA2026101500955), Oct 11, 2026: Airbus A320232. PRESSURE BLKHD. DAMAGED. DURING HEAVY MAINTENANCE, EA A26-842-01 FUSELAGE / CENTER FUSELAGE / FR35 FWD FACE TO PRESSURE BULKHEAD ATTACHMENT / @ L (N588JB)
- [SDR AALA202610122377](https://openairdocs.org/sdr/AALA202610122377), Oct 9, 2026: Boeing 737823. VAPOR BARRIER. CRACKED. AIRCRAFT IN BASE MAINTENANCE: FOUND A 2 INCH CRACK IN THE RIGHT WHEEL WELL VAPOR BARRIER. LOCATED RBL 24 STA 663. CLEANE (N811NN)
- [SDR AALA202610094271](https://openairdocs.org/sdr/AALA202610094271), Oct 8, 2026: Boeing 737823. VAPOR BARRIER. CRACKED. AIRCRAFT IN BASE MAINTENANCE: CRACK IN VAPOR BARRIER, RH WHEEL WELL, LOCATED STA 663 RBL 24.0APPROX. 2" IN LENGTH. ACCOM (N811NN)
- [SDR UIEA2026100600957](https://openairdocs.org/sdr/UIEA2026100600957), Oct 7, 2026: Boeing 74745EF. FITTING. CORRODED. DURING OPEN HOLE INSPECTION AT RIGHT UPPER SPLICE FITTING AT STA2598 BULKHEAD, FOUND 01 EA ELONGATED HOLE AND 02 EA HOLE (N486MC)
- [SDR UIEA2026100600958](https://openairdocs.org/sdr/UIEA2026100600958), Oct 7, 2026: Boeing 74745EF. FITTING. CORRODED. DURING OPEN HOLE INSPECTION AT LEFT UPPER SPLICE FITTING AT STA 2598 BULKHEAD, FOUND 01 EA HOLE WITH CORROSION AT 9 O'CL (N486MC)
- [SDR SWAA2026092991980](https://openairdocs.org/sdr/SWAA2026092991980), Sep 25, 2026: Boeing 7377H4. VAPOR BARRIER. CRACKED. FOUND 12 INCH CRACK ON THE VAPOR BARRIER WEB, RBL 40, 40 INCHES DOWN FROM WL. REACCESSED DAMAGE, CRACK FOUND TO BE 18+ I (N283WN)
- [SDR LR7A2026092403975](https://openairdocs.org/sdr/LR7A2026092403975), Sep 24, 2026: Lkheed 382G. CAP. CRACKED. DURING SCHEDULED C-15 CHECK WHILE PERFORMING OTHER MAINTENANCE, FOUND FS617 BULKHEAD OUTBOARD CAP CORRODED AT LBL82, WL1 (N403LC)
- [SDR LR7A2026092403973](https://openairdocs.org/sdr/LR7A2026092403973), Sep 24, 2026: Lkheed 382G. BULKHEAD WEB. CRACKED. DURING SCHEDULED C-15 CHECK WHILE PERFORMING OTHER MAINTENANCE, FOUND FS946 AFT FUSELAGE RT BULKHEAD WEB CRACKED AT RBL  (N403LC)
- [SDR LR7A2026092403964](https://openairdocs.org/sdr/LR7A2026092403964), Sep 24, 2026: Lkheed 382G. BULKHEAD WEB. CRACKED. DURING SCHEDULED C-15 CHECK WHILE PERFORMING OTHER MAINTENANCE, FOUND FS557 UNDERFLOOR BULKHEAD WEB CRACKED AT LBL 17-42 (N403LC)
- [SDR LR7A2026092403963](https://openairdocs.org/sdr/LR7A2026092403963), Sep 24, 2026: Lkheed 382G. BULKHEAD WEB. CORRODED. DURING SCHEDULED C-15 CHECK UNDER JOB CARD HC5323, FOUND LH MLG WHEEL WELL BULKHEAD WEB CORRODED AT FS 577, LBL 61, WL 1 (N403LC)
- [SDR LR7A2026092403953](https://openairdocs.org/sdr/LR7A2026092403953), Sep 24, 2026: Lkheed 382G. BULKHEAD WEB. CRACKED. DURING SCHEDULED C-15 CHECK WHILE PERFORMING OTHER MAINTENANCE, FOUND CARGO UNDERFLOOR BULKHEAD WEB CRACKED AT FS797, LB (N403LC)
- [SDR LR7A2026092403949](https://openairdocs.org/sdr/LR7A2026092403949), Sep 24, 2026: Lkheed 382G. BULKHEAD WEB. CRACKED. DURING SCHEDULED C-15 CHECK WHILE PERFORMING OTHER MAINTENANCE, FOUND AFT FUSELAGE UPPER BULKHEAD WEB CRACKED AT FS946,  (N403LC)
- [SDR LR7A2026092403947](https://openairdocs.org/sdr/LR7A2026092403947), Sep 24, 2026: Lkheed 382G. BULKHEAD WEB. CRACKED. DURING SCHEDULED C-15 CHECK UNDER JOB CARD HC5323, FOUND LH MLG WELL BULKHEAD WEB LOWER FASTENER HOLE CRACKED AT FS576,  (N403LC)
- [SDR LR7A2026092403946](https://openairdocs.org/sdr/LR7A2026092403946), Sep 24, 2026: Lkheed 382G. BULKHEAD WEB. CRACKED. DURING SCHEDULED C-15 CHECK UNDER JOB CARD HC5313, FOUND CENTER FUSELAGE BULKHEAD WEB CRACKED AT FS585, RBL61, WL200-215 (N403LC)
- [SDR LR7A2026092403945](https://openairdocs.org/sdr/LR7A2026092403945), Sep 24, 2026: Lkheed 382G. BULKHEAD WEB. CORRODED. DURING SCHEDULED C-15 CHECK UNDER JOB CARD HC3215, FOUND NLG WELL FS165 BULKHEAD UPPER WEB CORRODED AT LBL6, WL171. REPA (N403LC)
- [SDR LR7A2026092403944](https://openairdocs.org/sdr/LR7A2026092403944), Sep 24, 2026: Lkheed 382G. BULKHEAD. CRACKED. DURING SCHEDULED C-15 CHECK UNDER JOB CARD HC5324, FOUND RT MLG WELL BULKHEAD MANIFOLD FASTENER HOLE CRACKED AT FS532, R (N403LC)
- [SDR LR7A2026092403943](https://openairdocs.org/sdr/LR7A2026092403943), Sep 24, 2026: Lkheed 382G. BULKHEAD. CRACKED. DURING SCHEDULED C-15 CHECK UNDER JOB CARD HC5324, FOUND RH MLG WELL BULKHEAD MANIFOLD FASTENER HOLE CRACKED AT FS542, R (N403LC)
- [SDR LR7A2026092403942](https://openairdocs.org/sdr/LR7A2026092403942), Sep 24, 2026: Lkheed 382G. BULKHEAD. CRACKED. DURING SCHEDULED C-15 CHECK UNDER JOB CARD HC5324, FOUND RT MLG WELL BULKHEAD MANIFOLD FASTENER HOLE CRACKED AT FS567, R (N403LC)
- [SDR LR7A2026092403941](https://openairdocs.org/sdr/LR7A2026092403941), Sep 24, 2026: Lkheed 382G. BULKHEAD. CRACKED. DURING SCHEDULED C-15 CHECK UNDER JOB CARD HC5324, FOUND LH MLG WELL BULKHEAD MANIFOLD FASTENER HOLE CRACKED AT FS567, L (N403LC)
- [SDR LR7A2026092403939](https://openairdocs.org/sdr/LR7A2026092403939), Sep 24, 2026: Lkheed 382G. BULKHEAD WEB. CRACKED. DURING SCHEDULED C-15 CHECK UNDER JOB CARD HC5316, FOUND FS497 UPPER FUSELAGE BULKHEAD WEB CRACKED AT RBL60, WL260. REPA (N403LC)
- [SDR LR7A2026092403938](https://openairdocs.org/sdr/LR7A2026092403938), Sep 24, 2026: Lkheed 382G. BULKHEAD WEB. CRACKED. DURING SCHEDULED C-15 CHECK UNDER JOB CARD HC5316, FOUND FS497 UPPER FUSELAGE BULKHEAD WEB CRACKED AT LBL60, WL260. / RE (N403LC)
- [SDR LR7A2026092403935](https://openairdocs.org/sdr/LR7A2026092403935), Sep 24, 2026: Lkheed 382G. DOUBLER. CRACKED. DURING SCHEDULED C-15 CHECK UNDER JOB CARD HC5315, FOUND FS946 BULKHEAD WEB DOUBLER CRACKED AT RBL73, WL276. / REPAIR BY (N403LC)
- [SDR LR7A2026092403931](https://openairdocs.org/sdr/LR7A2026092403931), Sep 24, 2026: Lkheed 382G. GUSSET. CRACKED. DURING SCHEDULED C-15 CHECK UNDER JOB CARD HC5315, FOUND FS946 RH UPPER BULKHEAD GUSSET CRACKED AT RBL59, WL203. REPAIR  (N403LC)
- [SDR LR7A2026092403924](https://openairdocs.org/sdr/LR7A2026092403924), Sep 24, 2026: Lkheed 382G. PANEL. CRACKED. DURING SCHEDULED C-15 CHECK UNDER JOB CARD HC5324, FOUND RH MLG UPPER WHEEL WELL FS617 BULKHEAD RAISER PANEL CRACKED AT  (N403LC)
- [SDR LR7A2026092403922](https://openairdocs.org/sdr/LR7A2026092403922), Sep 24, 2026: Lkheed 382G. BULKHEAD WEB. CRACKED. DURING SCHEDULED C-15 CHECK WHILE PERFORMING OTHER MAINTENANCE, FOUND FS 777.0E BULKHEAD WEB CRACKED AT RBL14-18, WL126- (N403LC)
- [SDR LR7A2026092403921](https://openairdocs.org/sdr/LR7A2026092403921), Sep 24, 2026: Lkheed 382G. BULKHEAD WEB. CRACKED. DURING SCHEDULED C-15 CHECK WHILE PERFORMING OTHER MAINTENANCE, FOUND FS 777 BULKHEAD WEB CRACKED AT LBL14-18, WL126-143 (N403LC)
- [SDR AALA202610219984](https://openairdocs.org/sdr/AALA202610219984), Sep 23, 2026: Boeing 737823. VAPOR BARRIER. CRACKED. AIRCRAFT IN BASE MAINTENANCE: CENTER AND OUTBOARD WING LOWER SURFACE AT STATION 663 25+7 32RBL HAS CRACK. INSTALLED NEW  (N959NN)
- [SDR ASAA2026091969388](https://openairdocs.org/sdr/ASAA2026091969388), Sep 19, 2026: Boeing 737890. BULKHEAD. CORRODED. FWD CARGO L/H BULKHEAD SUPPORT STA 500I LBL 25 TO LBL 30 CORRODED. GROUNDED - YES. REMOVED DAMAGE ON AFT BULKHEAD L/H SU (N570AS)
- [SDR ASAA2026091969387](https://openairdocs.org/sdr/ASAA2026091969387), Sep 19, 2026: Boeing 737890. BULKHEAD. CORRODED. FWD CARGO AFT LOWER BULKHEAD SUPPORT STA 500I LBL 24 TO RBL 24 CORRODED. GROUNDED - YES. REMOVED DAMAGE ON AFT BULKHEAD  (N570AS)
- [SDR ABXA20260918424](https://openairdocs.org/sdr/ABXA20260918424), Sep 18, 2026: Boeing 7673P6. WEB. CRACKED. CRACK INDICATION FOUND DURING LFEC INSPECTION AT FASTENER COMMON WITH L/H SIDE STA 1809 BULKHEAD WEB BELOW UPPER LONGERO (N762CK)
- [SDR YENA2026091800821](https://openairdocs.org/sdr/YENA2026091800821), Sep 18, 2026: Airbus A320232. PRESSURE BLKHD. CRACKED. DURING HEAVY MAINTENANCE, EA A26-716-01, FR35 FWD FACE TO PRESSURE BULKHEAD ATTACHMENT @ LEVEL OF STGR 30RH, FASTENER HO (N523JB)
- [SDR YENA2026091800818](https://openairdocs.org/sdr/YENA2026091800818), Sep 18, 2026: Airbus A320232. PRESSURE BLKHD. CRACKED. DURING HEAVY MAINTENANCE, EA A26-710-01, FR35 PRESSURE BULKHEAD CRACKED - TIME-LIMITED REPAIR (CONSIDERED A MAJOR REPAIR (N523JB)
- [SDR LR7A2026091803911](https://openairdocs.org/sdr/LR7A2026091803911), Sep 18, 2026: Lkheed 382G. BULKHEAD WEB. DEFORMED. DURING SCHEDULED A CHECK INSPECTION UNDER JOB CARD HA1200 THERE WAS TAIL STRIKE DAMAGE FOUND TO FS797.0E BULKHEAD WEB DE (N405LC)
- [SDR LR7A2026091803910](https://openairdocs.org/sdr/LR7A2026091803910), Sep 18, 2026: Lkheed 382G. BULKHEAD WEB. DEFORMED. DURING SCHEDULED A CHECK INSPECTION UNDER JOB CARD HA1200 THERE WAS TAIL STRIKE DAMAGE FOUND TO FS797.0E BULKHEAD WEB DE (N405LC)
- [SDR AALA202609211742](https://openairdocs.org/sdr/AALA202609211742), Sep 17, 2026: Boeing 737823. VAPOR BARRIER. CRACKED. AIRCRAFT IN BASE MAINTENANCE: MOST OUTBOARD UPPER HOLE AT RBL 70, BS 663 IS CRACKED. REMOVED AND REPLACED VAPOR BARRIER  (N355PU)
- [SDR AALA202609306816](https://openairdocs.org/sdr/AALA202609306816), Sep 13, 2026: Boeing 737823. VAPOR BARRIER. CRACKED. AIRCRAFT IN BASE MAINTENANCE: 0.70" CRACK AT STATION 663, RIGHT-HAND VAPOR BARRIER ATTACH ANGLE RBL 7. MAINTENANCE INSTA (N810NN)
- [SDR SWAA2026100524039](https://openairdocs.org/sdr/SWAA2026100524039), Sep 12, 2026: Boeing 7378H4. VAPOR BARRIER. CRACKED. CRACK FOUND AT THE VAPOR BARRIER, BS 663, WL 165, LBL 25. REPAIRED IAW AMM 51-21-99-300-802. (N8305E)
- [SDR VNAA2026091140](https://openairdocs.org/sdr/VNAA2026091140), Sep 11, 2026: Cndair CL6002C10. BULKHEAD. CORRODED. AFT SIDE OF BS 235 BULKHEAD HAD CORROSION AND MISSING COLLAR ON LOWER RT SIDE, ADJACENT TO ELECTRICAL CONNECTOR J110. RE (N507AE)
- [SDR HNAA2026100700955](https://openairdocs.org/sdr/HNAA2026100700955), Sep 2, 2026: Emb EMB145LR. PRESSURE BLKHD. CRACKED. FWD PX BULKHEAD, RH WEB CRACKED. REPAIRED IAW ETD 2026-145-015239 AND EO 1-53-26-0451 (N653AE)
- [SDR HNAA2026100700951](https://openairdocs.org/sdr/HNAA2026100700951), Sep 2, 2026: Emb EMB145LR. PRESSURE BLKHD. CRACKED. FWD PX BULKHEAD, LT WEB CRACKED. REPAIRED WEB IAW ETD 2026-145-015239 REV. A AND EO 1-53-26-0451 (N653AE)
- [SDR UIEA2026082400790](https://openairdocs.org/sdr/UIEA2026082400790), Sep 1, 2026: Boeing 747412F. SUPPORT WEB. CRACKED. BS 1480, RT FITTING FWD SUPPORT WEB FOUND CRACKED. THE FITTING FWD SUPPORT WEB WAS REPAIRED IAW SRM 53-40-08-2R-1, REPAI (N489MC)
- [SDR UIEA2026082500795](https://openairdocs.org/sdr/UIEA2026082500795), Sep 1, 2026: Boeing 747412F. BULKHEAD WEB. CRACKED. LT WING LG WW FWD BULKHEAD LWR INBD WEB FOUND CRACKED. THE LT WLG WW FWD BULKHEAD LWR WEB REPAIRED IAW RI-52-49-18450, R (N489MC)
- [SDR VNAA2026083138](https://openairdocs.org/sdr/VNAA2026083138), Aug 31, 2026: Cndair CL6002C10. RIB. CRACKED. L/H WHEEL WELL BATT RIB IS CRACKED. REMOVED AND INSTALLED NEW SERVICEABLE LT SIDE WHEEL WELL BATT RIB LOCATED AT WS 24 I (N705PS)
- [SDR VNAA2026083147](https://openairdocs.org/sdr/VNAA2026083147), Aug 31, 2026: Cndair CL6002C10. WEB. CORRODED. BS 280 RT WEB IS CORRODED, LBL 9. REPAIRED BS 280 RIGHT LOWER WEB IAW SRM 53-11-10-201-004-A01. (N705PS)
- [SDR SWAA2026090386994](https://openairdocs.org/sdr/SWAA2026090386994), Aug 30, 2026: Boeing 7377H4. VAPOR BARRIER. CRACKED. L/H WHEEL WELL VAPOR BARRIER CRACKED FROM BOTTOM OF LBL 54.21 TO 11 INCHES FROM BOTTOM OF LBL 40.00. PER SRM 57-10-10-1A (N955WN)
- [SDR SWAA2026092129407](https://openairdocs.org/sdr/SWAA2026092129407), Aug 24, 2026: Boeing 7377H4. VAPOR BARRIER. CRACKED. CRACKED VAPOR BARRIER, BS 663.75, LBL 27. REPAIRED THE VAPOR BARRIER. THIS FAULT IS DOCUMENTED ON TTG8Q01DQ62J. (N259WN)
- [SDR SWAA2026092188686](https://openairdocs.org/sdr/SWAA2026092188686), Aug 24, 2026: Boeing 7377H4. VAPOR BARRIER. CRACKED. CRACKED VAPOR BARRIER, BS 663.75, LBL 27. REPAIRED THE VAPOR BARRIER, FAULT IS DOCUMENTED ON TTG8Q01DQ62J. (N259WN)

All 20,041: https://openairdocs.org/jasc/5312/reports.md

## Other codes in chapter 53

- [JASC 5300](https://openairdocs.org/jasc/5300): Fuselage Structure (General) (8,204 reports)
- [JASC 5301](https://openairdocs.org/jasc/5301): Aerial Tow Equipment (18 reports)
- [JASC 5302](https://openairdocs.org/jasc/5302): Rotorcraft Tail Boom (965 reports)
- [JASC 5310](https://openairdocs.org/jasc/5310): Fuselage Main, Structure (38,419 reports)
- [JASC 5311](https://openairdocs.org/jasc/5311): Fuselage Main, Frame (61,513 reports)
- [JASC 5313](https://openairdocs.org/jasc/5313): Fuselage Main, Longeron/Stringer (36,268 reports)
- [JASC 5314](https://openairdocs.org/jasc/5314): Fuselage Main, Keel (2,917 reports)
- [JASC 5315](https://openairdocs.org/jasc/5315): Fuselage Main, Floor Beam (44,160 reports)
- [JASC 5320](https://openairdocs.org/jasc/5320): Fuselage Miscellaneous Structure (215,762 reports)
- [JASC 5321](https://openairdocs.org/jasc/5321): Fuselage Floor Panel (49,299 reports)
- [JASC 5322](https://openairdocs.org/jasc/5322): Fuselage Internal Mounting Structure (12,746 reports)
- [JASC 5323](https://openairdocs.org/jasc/5323): Fuselage Internal Stairs (98 reports)
- [JASC 5324](https://openairdocs.org/jasc/5324): Fuselage Fixed Partitions (40 reports)
- [JASC 5330](https://openairdocs.org/jasc/5330): Fuselage Main, Plate/Skin (79,230 reports)
- [JASC 5340](https://openairdocs.org/jasc/5340): Fuselage Main, Attach Fittings (22,383 reports)
- [JASC 5341](https://openairdocs.org/jasc/5341): Fuselage, Wing Attach Fittings (489 reports)
- [JASC 5342](https://openairdocs.org/jasc/5342): Fuselage, Stabilizer Attach Fittings (573 reports)
- [JASC 5343](https://openairdocs.org/jasc/5343): Fuselage, Landing Gear Attach Fittings (1,946 reports)
- [JASC 5344](https://openairdocs.org/jasc/5344): Fuselage, Door Hinge (2,419 reports)
- [JASC 5345](https://openairdocs.org/jasc/5345): Fuselage, Equipment Attach Fittings (815 reports)
- [JASC 5346](https://openairdocs.org/jasc/5346): Fuselage, Powerplant Attach Fittings (921 reports)
- [JASC 5347](https://openairdocs.org/jasc/5347): Fuselage, Seat/Cargo Attach Fittings (66,290 reports)
- [JASC 5350](https://openairdocs.org/jasc/5350): Aerodynamic Fairings (6,107 reports)
- [JASC 5397](https://openairdocs.org/jasc/5397): Fuselage Main, Bulkhead Fuselage wiring (67 reports)

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