# Service difficulty reports: JASC 4910

A list on [JASC 4910](https://openairdocs.org/jasc/4910.md).

Reports filed under 4910 · APU Cowling/Containment, newest first.

Page 1 of 20 · 960 reports

- [SDR CALA2026102120505](https://openairdocs.org/sdr/CALA2026102120505.md): Seal · damaged · Oct 19, 2026 · N2331U · Boeing 777300ER
  > APU MOUNT CHECK, INLET DUCT PLENUM SEAL IS DISTORTED ON LT SIDE. REMOVED APU AIR INLET PLENUM SEAL IAW AMM 49-15-04 & REPLACED IAW AMM 49-15-04-400-801.
- [SDR SWIA2026101677758](https://openairdocs.org/sdr/SWIA2026101677758.md): Structure · damaged · Oct 16, 2026 · N913EV · Cndair CL6002B19
  > FOUND TOOLING DAMAGE AT RT BS 672.20, BEHIND APU SHIELD. BLENDED DAMAGE, PERFORMED UT REMAINING THICKNESS MEASUREMENT IAW NDTM PART 4, 51-00-001, & FOUND TO BE ACCEPTABLE IAW REO 601R-53-61-8661, REV-. PERFORMED EDDY CURRENT INSPECTION OF THE BLENDED AREAS IA
- [SDR JR2R20261016817](https://openairdocs.org/sdr/JR2R20261016817.md): Access Door · bent · Oct 16, 2026 · N88359 · Emb ERJ170200LL
  > APU PANEL 351GL HAS CORNER OF PANEL BENT AT FWD L/H EDGE. REPAIRED PER ETD.
- [SDR HNAA2026101901011](https://openairdocs.org/sdr/HNAA2026101901011.md): Firewall · cracked · Sep 27, 2026 · N656AE · Emb EMB145LR
  > APU FIREWALL WAS CRACKED ABOVE UPPER LEFT APU MOUNT ATTACH BRACKET. PERFORMED DOUBLER AND FILLER REPAIR ON APU FIREWALL IAW ETD2026-145-017372, REV A AND EO1-53-26-0511.
- [SDR IPXA2026102118066](https://openairdocs.org/sdr/IPXA2026102118066.md): Support Bracket · corroded · Sep 24, 2026 · N402UP · Boeing 75724APF
  > REMOVED SUPPORT BRACKET BETWEEN APU DOOR ACTUATOR AND DOOR HOUSING ASSY DIRTY WITH DETERIORATED CIC AND AREAS OF LITE CORROSION AROUND FASTENER HOLES. RL049. PROCURED AND VERIFIED P/N: 353N1021-3 FITTING-ACTR EFFECTIVE FOR THIS A/C IN REF TO AIPC 49-15-08-01 I
- [SDR HNAA2026102801044](https://openairdocs.org/sdr/HNAA2026102801044.md): Bracket · cracked · Sep 23, 2026 · N662EH · Emb EMB145LR
  > BRACKET CRACKED ON STR13 TO APU FIREWALL.RAR BRACKET IAW SRM 51-40-02
- [SDR IPXA2026102413332](https://openairdocs.org/sdr/IPXA2026102413332.md): Skin Panel · delaminated · Sep 18, 2026 · N402UP · Boeing 75724APF
  > LOWER AFT APU PANEL BETWEEN STA 1963 TO 1992 IS DELAMINATED. INSTALLED/BONDED ALL REPAIR DOUBLERS AND FILLERS ON INNER SIDE OF LOWER AFT APU PANEL BETWEEN STA 1963 TO 1992 AND CURED AT 310'F DEGS FOR 360 MINUTES REF 51-70-10-2R-0 REPAIR 4 PARA,4 AND SRM 51-70-
- [SDR IPXA2026101613332](https://openairdocs.org/sdr/IPXA2026101613332.md): Panel · delaminated · Sep 18, 2026 · N402UP · Boeing 75724APF
  > MAJOR REPAIR, LOWER AFT APU PANEL BETWEEN BS 1963 TO 1992 IS DELAMINATED VERIFIED STEP 14 IS ACCOMPLISHED AND HEAT CON. TAP TEST. NO DISBONDS OR DELAMINATIONS NOTED. OKAY TO TREAT AND PRIME. REF GMM RII 04-02.
- [SDR CALA2026092819931](https://openairdocs.org/sdr/CALA2026092819931.md): Angle · corroded · Sep 18, 2026 · N73299 · Boeing 737824
  > APU BAY L/H CUTOUT FWD TWO BRACKETS WITH CORROSION. REMOVED AND REPLACED APU BAY LT CUTOUT ANGLE IAW SRM 51-40-02-0G -0 PAR. 4 AND 7 AND DWG 148A8600, REV A.
- [SDR JR2R20260914503](https://openairdocs.org/sdr/JR2R20260914503.md): Bulkhead · cracked · Sep 14, 2026 · N88327 · Emb ERJ170200LR
  > APU BLKHEAD PANEL 351BZ IS CRACKED. REPAIR.
- [SDR IPXA2026102798760](https://openairdocs.org/sdr/IPXA2026102798760.md): Skin Panel · damaged · Sep 11, 2026 · N402UP · Boeing 75724APF
  > APU COMPARTMENT SKIN PANEL HAS EVIDENCE OF DELAMINATION APPROX BTW BS 1885 AND BS 1896, STGR 17R AREA, PERFORMED REPAIR PER. SRM 51-70-10-2R-4 REPAIR 4 (REPAIRS LARGE DAMAGE) FIG. 201 DETAIL A REV 126 USING SRM 51-70-10-2R-0 REV 126 REPAIRED GUIDLINES PER SRM
- [SDR IPXA2026101698760](https://openairdocs.org/sdr/IPXA2026101698760.md): Skin · delaminated · Sep 11, 2026 · N402UP · Boeing 75724APF
  > MAJOR REPAIR, APU COMPARTMENT SKIN PANEL HAS EVIDENCE OF DELAMINATION APPROX BTW BS 1885 AND BS 1896, STGR 17R AREA,
- [SDR IPXA2026102376207](https://openairdocs.org/sdr/IPXA2026102376207.md): Bulkhead · dented · Sep 10, 2026 · N402UP · Boeing 75724APF
  > APU COMPARTMENT STA 1885 BULKHEAD REPAIR DOUBLE 10" INCHES RIGHT OF LIGHT SWITCH DENTED IN AND EDGES ROLLED UP. RL019. FABRICATED -1 REPAIR DOUBLER AND -2 REPAIR FILLER, DRILLED THE FASTENER HOLES, DEBURRED AND SMOOTHEN ALL HOLES AND SHARP EDGES ON WEB AND THE
- [SDR HNAA2026101601002](https://openairdocs.org/sdr/HNAA2026101601002.md): Firewall · cracked · Sep 10, 2026 · N650AE · Emb EMB145LR
  > APU FIREWALL CRACKED AT RH EDGE BTW STR11-12R. REPAIRED IAW ETD 2026-145-015767
- [SDR HNAA2026101601000](https://openairdocs.org/sdr/HNAA2026101601000.md): Firewall · cracked · Sep 10, 2026 · N650AE · Emb EMB145LR
  > 53-2245 APU FIREWALL CRACKED AT RH EXTINGUISHER NOZZLE. REPAIRED IAW ETD 2026-145-015767 REV C AND EO 1-53-26-0481
- [SDR IPXA2026100276207](https://openairdocs.org/sdr/IPXA2026100276207.md): Bulkhead · dented · Sep 10, 2026 · N402UP · Boeing 75724APF
  > MAJOR REPAIR, APU COMPARTMENT STA 1885 BULKHEAD REPAIR DOUBLE 10" INCHES RIGHT OF LIGHT SWITCH DENTED IN AND EDGES ROLLED UP. RL019 VERIFIED STEPS 22 AND 23 RII GMM 04-02
- [SDR IPXA2026102328019](https://openairdocs.org/sdr/IPXA2026102328019.md): Door Sill · delaminated · Sep 7, 2026 · N402UP · Boeing 75724APF
  > LIGHT DELAMINATION ALONG EXTERIOR VERTICAL EDGE OF APU INLET DOOR. QC MKD AS DB-13. COMPOSITE SKILL. INSTALLED APU AIR INTAKE DOOR AND PERFORMED MANUALLY OPERATE FULL CLOSED AND FULL OPENED AND VERIFIED THE APU AIR INTAKE DOOR MOVE SMOOTHLY AND VERIFIED GAP
- [SDR IPXA2026102080618](https://openairdocs.org/sdr/IPXA2026102080618.md): Skin Panel · delaminated · Sep 4, 2026 · N463UP · Boeing 75724APF
  > APU COMPARTMENT R/H SIDE COMPOSITE SKIN PANEL SECTION BETWEEN STA 1941 AND 1963 DELAMINATED. REPAIR FILLER AND DOUBLER MADE FROM 0.012-INCH-THICK 2024-T3 BARE AL SHT AND REPLACEMENT HONEYCOMB CORE MADE FROM BMS4-4 3-10N OR EQUIVALENT. B. REPAIRED PER SRM 53-80
- [SDR IPXA2026101780235](https://openairdocs.org/sdr/IPXA2026101780235.md): Bracket · corroded · Sep 4, 2026 · N463UP · Boeing 75724APF
  > ALL APU COMPARTMENT L/H SIDE CEILING ELECTRICAL WIRE HARNESS SUPPORT BRACKETS HAVE CORROSION AND MISSING PROTECTIVE FINISH. INSTALLED 4EA NEW SUPPORT BRACKETS AT APU COMPARTMENT STA 1885 BETWEEN LBL 0 - LBL 30 WL 250.00 IAW B757-200PF SRM 51-40-02-0G-0.
- [SDR IPXA2026100280598](https://openairdocs.org/sdr/IPXA2026100280598.md): Skin · delaminated · Sep 4, 2026 · N463UP · Boeing 75724APF
  > MAJOR REPAIR, APU COMPARTMENT R/H SIDE COMPOSITE SKIN PANEL SECTION BETWEEN STA 1918 AND 1941 DELAMINATED. RL038 QCI(RII) VERIFIED FABRICATION OF DOUBLER PER STEP 16 AND GMM RII 04-02
- [SDR IPXA2026100280618](https://openairdocs.org/sdr/IPXA2026100280618.md): Skin · delaminated · Sep 4, 2026 · N463UP · Boeing 75724APF
  > MAJOR REPAIR, APU COMPARTMENT R/H SIDE COMPOSITE SKIN PANEL SECTION BETWEEN STA 1941 AND 1963 DELAMINATED. RL039 QCI(RII) VERIFIED STEP 13 IS C/W AND VERIFIED TOOLS PER DOCUMENTS AND GMM RII 04-02
- [SDR IPXA2026090486275](https://openairdocs.org/sdr/IPXA2026090486275.md): Skin · debonded · Sep 4, 2026 · N461UP · Boeing 75724APF
  > APU COMPARTMENT, RT SIDE HONEYCOMB SKIN PANEL DISBONDED AREA BETWEEN FRAME STA 1918 AND 1941 AND 24" ABOVE LONGERON 17R. REMOVED DAMAGE AREA SKIN IAW SRM 53-80-01-2R-0 REPAIR GENERAL, SECTION 48 DETAIL I, SRM 51-70-10 -2R-2, FIG 203, SHT 1 AND SRM 51-70-10-2R
- [SDR IPXA2026101678146](https://openairdocs.org/sdr/IPXA2026101678146.md): Support Bracket · damaged · Sep 3, 2026 · N463UP · Boeing 75724APF
  > STR, ATA 49: APU AIR INTAKE DUCT EXTERNAL DRAIN TUBE SUPPORT BRACKET HAS CORROSION. RL020. INSTALLED NEW BRACKET SUPPORT P/N: 356N1011-1 BTCH #: 0004514718ON APU AIR INTAKE DUCT IAW B757-200PF SRM 51-40-02-0G-O. REVIEWED
- [SDR IPXA2026090916126](https://openairdocs.org/sdr/IPXA2026090916126.md): Strap · corroded · Aug 25, 2026 · N441UP · Boeing 75724APF
  > MAJOR REPAIR, APU INLET DOOR AFT STRAP HAD CORROSION. REMOVED OUTER STRAP IAW SRM 51-40-02-0G-0. INSTALLED NEW REPAIR PARTS AT INLET DOOR AFT STRAP IAW SRM 53-80-15-2R-1,REPAIR 1, DETAIL II.
- [SDR IPXA2026082620255](https://openairdocs.org/sdr/IPXA2026082620255.md): Bulkhead · corroded · Aug 4, 2026 · N461UP · Boeing 75724APF
  > APU COMPARTMENT FWD BULKHEAD FWD SIDE BS 1885.2, LBL 12 & RBL 9. EXTENSIVE CORROSION.
- [SDR HNAA2026082500780](https://openairdocs.org/sdr/HNAA2026082500780.md): Firewall · cracked · Jul 28, 2026 · N925AE · Emb EMB145LR
  > APU FIREWALL CRACKED. REPAIRED IAW SRM 53-32-12
- [SDR 2026FA0000602](https://openairdocs.org/sdr/2026FA0000602.md): Isolator · wrong part · Jul 27, 2026 · N320FR · Airbus A320214
  > DURING APU ISOLATOR MOUNT REPLACEMENT IT WAS DISCOVERED THAT THE ORIENTATION OF THE VIBRATION MOUNT HAD BEEN INSTALLED 90' OUT OF ORIGINAL FITTING. THE APU HAD TO BE RE-REMOVED AND ADDITIONAL CHARGES INCURRED FOR THE LIFTING KIT. ROBUST INSPECTION POST ASSEMBL
- [SDR IPXA2026091153139](https://openairdocs.org/sdr/IPXA2026091153139.md): Skin · debonded · Jul 25, 2026 · N461UP · Boeing 75724APF
  > APU COMPARTMENT R/H SIDE HONEYCOMB SKIN PANEL DISBONDED AREA BETWEEN FRAME STA 1918 AND 1941 AND 24" ABOVE LONGERON 17R. RL045 REPAIRED PER SRM 51-70-10-2R-4 REPAIR 4 (REPAIRS TO LARGE DAMAGE) FIGURE 201 DETAIL A REV 125 USING B757-200PF SRM 51-70-10-2R-0 REV
- [SDR IPXA2026082254285](https://openairdocs.org/sdr/IPXA2026082254285.md): Support Bracket · corroded · Jul 25, 2026 · N461UP · Boeing 75724APF
  > APU COMPARTMENT, FWD BULKHEAD BS 1885, ALL WIRE HARNESSES AND POWER CABLE CLAMP SUPPORT BRACKETS ATTACHED TO BULKHEAD HAVE CORROSION AND OR MISSING PROTECTIVE FINISH AND COAT. RL050 INSP: STEP 33 VERIFIED WIRE HARNESS SUPPORT CLAMPS RESECURED TO 22 EACH BRACKE
- [SDR IPXA2026081286146](https://openairdocs.org/sdr/IPXA2026081286146.md): Retainer · worn · Jul 16, 2026 · N455UP · Boeing 75724APF
  > APU COMPARTMENT FWD BULKHEAD SAFETY CATCH ANGLE FOR RT APU DOOR 316AR WORN THIN. RL017. INSTALLED 1 NEW RETAINER AT STA 1885.20 BELOW WL 210 (APU COMP. FWD BULKHEAD), IAW B757-200PF SRM 51-40-02-0G-0 REV 125 20MAY2026 AND BOEING DWG 148N8402.
- [SDR IPXA2026081501707](https://openairdocs.org/sdr/IPXA2026081501707.md): Skin · corroded · Jul 16, 2026 · N455UP · Boeing 75724APF
  > APU COMPARTMENT TAIL CONE LOWER BILGE ALUMINUM HONEYCOMB SKIN PANELS BETWEEN BS 1963 & 1992 HAD AREAS OF CORROSION TO INCLUDE ATTACHMENT TO FRAMES WITH AREAS OF MISSING FINISH. VERIFIED THE ABOVE STEP 17. INSTALLATION OF LWR-BILGE-ALUMN-HONEYCOMB-SKIN-PANE
- [SDR IPXA2026071089100](https://openairdocs.org/sdr/IPXA2026071089100.md): Support Bracket · cracked · Jun 27, 2026 · N453UP · Boeing 75724APF
  > APU INLET DUCT WITH BRACKET BROKEN. REMOVED BRACKET IAW B757-200 SRM 51-40-02. INSTALLED NEW PARTS (BRACKET SUPPORT) AT APU INLET DUCT IAW SRM 51-40-02-0G.
- [SDR CALA2026062217249](https://openairdocs.org/sdr/CALA2026062217249.md): Attach Fitting · gouged · Jun 20, 2026 · N79541 · Boeing 737824
  > GOUGE - AFT LT APU MOUNT ATTACH FITTING WITH GOUGE AT LOWER EDGE. AFT LT APU MOUNT ATTACH FITTING. ACCOMPLISHED REPAIR AT L/H APU SUPPORT FITTING ASSY IAW EC/RA 5342-01163 & AAR-MIA ESR-WI NO.: 2024457-7-15400,
- [SDR HNAA2026072400625](https://openairdocs.org/sdr/HNAA2026072400625.md): Access Panel · cracked · Jun 18, 2026 · N931AE · Emb EMB145LR
  > APU COWLING ACCESS PANEL CRACKED ON THE INTERIOR SIDE NEAR THE HINGE. REMOVED AND REPLACED APU COWLING ACCESS PANEL PER EMB 145 SRM 51-20-03 STEP 3
- [SDR IPXA2026061827919](https://openairdocs.org/sdr/IPXA2026061827919.md): Angle · corroded · Jun 18, 2026 · N429UP · Boeing 75724APF
  > HORZIZONAL STAB COMPT. APU INLET SURROUND STRUCTURE ANGLE IS CORRODED BETWN STA. 1787.45 TO 1825 STGR S-6R (059-07) ATA: 53-80 SKILL: STR
- [SDR FDEA202605290652](https://openairdocs.org/sdr/FDEA202605290652.md): Skin · delaminated · May 29, 2026 · N912FD · Boeing 75728A
  > APU COMPARTMENT INTERNAL SKIN AT BS 1900 DELAMINATED APPLIED PERMANENT AT APU COMPARTMENT INTERNAL SKIN IAW B757 SRM 51-70-10-2R AND PERFORMED TAP TEST AFTER REPAIR IS SATISFACTORY IAW B757 SRM 51-10-06-2R
- [SDR IPXA2026061201031](https://openairdocs.org/sdr/IPXA2026061201031.md): Strap · corroded · May 28, 2026 · N413UP · Boeing 75724APF
  > APU INLET DOOR AFT STRAP HAS CORROSION STA1825.00,S-3R TO S6R. INSTALLED PARTS OF REPAIR (STRAP 1, STRAP 2, FILLER 3, FILLER 4 AND OUTER STRAP) I.A.W. B757-200 PF SRM 51-40-02-0G-0 DETAIL I.
- [SDR IPXA2026061244983](https://openairdocs.org/sdr/IPXA2026061244983.md): Strap · corroded · May 24, 2026 · N413UP · Boeing 75724APF
  > APU INLET DOOR FWD STRAP HAS CORROSION INSTALLED NEW FWD STRAP I.A.W SRM 51-40-02-0G-0.
- [SDR IPXA2026061344863](https://openairdocs.org/sdr/IPXA2026061344863.md): Angle · corroded · May 24, 2026 · N413UP · Boeing 75724APF
  > APU INLET DOOR BETWEEN BS 1787.45 TO BS 1825 S-6R, LOWER ANGLE HAS CORROSION. INSTALLED NEW LOWER ANGLE IAW SRM 51-40-02-0G-0.
- [SDR JJBA20260520021](https://openairdocs.org/sdr/JJBA20260520021.md): Shear Panel · gouged · May 11, 2026 · N17159 · Emb EMB145XR
  > APU INTERIOR GOUGE ON SHEAR PANEL. BLEND OUT WAS PERFORMED.
- [SDR JJBA20260520020](https://openairdocs.org/sdr/JJBA20260520020.md): Frame · bent · May 11, 2026 · N17159 · Emb EMB145XR
  > APU INTERIOR, FRAME SHAPE U FWD-TO-REAR MULTIPLES BENT. RECOUNTOUR WAS PERFORMED.
- [SDR IPXA2026051005536](https://openairdocs.org/sdr/IPXA2026051005536.md): Strap · corroded · May 9, 2026 · N423UP · Boeing 75724APF
  > BS 1825 APU INTAKE DOOR SURROUND AFT STRAP HAS CORROSION ON AN EXISTING REPAIR ACCOMPLISH THE REPAIR IAW SRM 53-80-15-2R-1, DETAIL I.
- [SDR JJBA20260520022](https://openairdocs.org/sdr/JJBA20260520022.md): Skin · canning · May 9, 2026 · N17159 · Emb EMB145XR
  > LH APU SKIN OIL CANNING AND DENT. PERMANENT REINFORCEMENT REPAIR WAS PERFORMED.
- [SDR IPXA2026050681325](https://openairdocs.org/sdr/IPXA2026050681325.md): Angle · corroded · Apr 25, 2026 · N440UP · Boeing 75724APF
  > APU INLET DOOR LOWER CORNER ANGLE AT STA 1787.45 S-R6 HAS EVIDENCE OF CORROSION. INSTALLED NEW LOWER CORNER ANGLE I.A.W. SRM 51-40-02-0G-0.
- [SDR JJBA20260423025](https://openairdocs.org/sdr/JJBA20260423025.md): Skin · canning · Apr 17, 2026 · N14177 · Emb EMB145XR
  > APU SKIN OIL CANNING UPPER BETWEEN PROFILES, SIDE LH. REPAIRED APU COWLING SKIN.
- [SDR JJBA20260423024](https://openairdocs.org/sdr/JJBA20260423024.md): Skin · chafed · Apr 16, 2026 · N14177 · Emb EMB145XR
  > APU COWLING SHEAR PANEL HAS SEVERAL CHAFING ON SKIN. PERMANENT REPAIR WAS PERFORMED.
- [SDR JJBA20260423023](https://openairdocs.org/sdr/JJBA20260423023.md): Skin · damaged · Apr 16, 2026 · N14177 · Emb EMB145XR
  > APU COWLING INTERNAL SKIN GOUGE-DENT. PERMANENT REPAIR WAS PERFORMED.
- [SDR YENA2026041700406](https://openairdocs.org/sdr/YENA2026041700406.md): Access Panel · corroded · Apr 15, 2026 · N624JB · Airbus A320232
  > DURING HEAVY MAINTENANCE: CORROSION ACCESS PANEL 316AR FWD CORNER LOWER POSITION IN APU COMPARTMENT; PERFORMED PERMANENT REPAIR ON ACCESS PANEL 316AR FWD CORNER LOWER POSITION IN APU COMPARTMENT IAW SRM A320-52-41-22-300-003. THIS REPAIR IS CATEGORY A AND NOT
- [SDR CALA2026041615407](https://openairdocs.org/sdr/CALA2026041615407.md): Angle · corroded · Apr 15, 2026 · N24736 · Boeing 737724
  > APU COMPARTMENT LEFT SIDE LOWER FRAME HAS LIGHT CORROSION IN SEVERAL SPOTS. ACCOMPLISHED ESFR FORM AS PER GMM 04-20-05. REMOVED AND REPLACED APU COMPARTMENT LEFT SIDE LOWER FRAME PER SRM 51-40-02-0G-0 AND DWG 148A8600.
- [SDR REXA2026051500592](https://openairdocs.org/sdr/REXA2026051500592.md): Duct · cracked · Apr 13, 2026 · N137EV · Cndair CL6002D24
  > CRACK ON APU EXHAUST DUCT (INTERNAL AREA). CRACK ON APU EXHAUST DUCT (INTERNAL AREA) WAS WELDED PER HONEYWELL CMM REPAIR 1-1.

Next page: https://openairdocs.org/jasc/4910/reports.md?page=2

## 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 = '4910'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/jasc/4910/reports

---
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