# N522AU: 1988 Boeing 737-3B7, registration cancelled 2008-02-12

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: February 12, 2008
- Status when cancelled: Valid registration
- Airframe: [Boeing 737-3B7](https://openairdocs.org/model/boeing-737-3b7) (registry code 138447F)
- Engine: [GE CFM56 series](https://openairdocs.org/engine/ge-cfm56-series) (registry code 30016)
- Serial number: 23857
- Year built: 1988
- Type of aircraft: Fixed wing multi engine
- Engine type: Turbo-fan
- Airworthiness: Standard, transport
- Airworthiness date: March 14, 1988
- Certificate issued: October 26, 2006
- Last registry action: October 26, 2006
- Mode S code: A6906F
- Owner when cancelled: [737 Portfolio Trust](https://openairdocs.org/faa-owner/737%20PORTFOLIO%20TRUST)
- Location: [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington)
- Owner type: Corporation
- Owner's area on the map: 39.7357° N, 75.5321° W: Placed by OpenAirDocs: center of Wilmington, DE, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N522AU
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=522AU
- Page: https://openairdocs.org/deregistered/N522AU-2008-02-12

From the FAA registry file of November 4, 2026, cancelled registrations. Owners' street addresses are left out. The Mode S code belongs to the N-number, not the airframe.

ADs and bulletins for the Boeing 737-3B7: https://openairdocs.org/model/boeing-737-3b7.md

## Service difficulty reports (65, newest 50)

Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.

- [SDR USAA061429](https://openairdocs.org/sdr/USAA061429), Dec 15, 2006: DOOR FRAME. CRACKED. BS 492 FRAME AT LOWEST DOOR STOP CRACKED. REMOVED DAMAGE, FABRICATED AND INSTALLED FILLER AND REPAIR ANGLES IAW EA 98327, DEFECT SIZE: .125 INCH.
- [SDR USAA061430](https://openairdocs.org/sdr/USAA061430), Dec 15, 2006: FRAME. CRACKED. BS 847 FRAME AT LOWER DOOR STOP MOUNT BOLT HOLE NEAR S-24R CRACKED. REMOVED DAMAGE, FABRICATED AND INSTALLED FILLER AND REPAIR ANGLES IAW EA 98328, DEFECT SIZE:
- [SDR USAA200608001](https://openairdocs.org/sdr/USAA200608001), Aug 21, 2006: SKIN. CRACKED. TWO CRACKS FOUND, 2.5 INCH AND 3 INCH. THE 2.5 INCH CRACK AT 727E S24R, 3 INCH CRACK AT 727E + 5 INCH S25R ON FUSELAGE SKIN. INSTALLED DOUBLER PER SRM 53-00-01 
- [SDR SB05165](https://openairdocs.org/sdr/SB05165), Dec 12, 2005: BATTERY PACK. DISCHARGED. BDL - SEVERAL CABIN EMERGENCY LIGHTS WERE FOUND INOPERATIVE. MAINTENANCE REPLACED THE LEFT EMERGENCY LIGHT BATTERY PACK. OPERATIONALLY CHECKS OK.
- [SDR SB05159](https://openairdocs.org/sdr/SB05159), Dec 1, 2005: SENSOR. OUT OF ADJUST. BOS - FLT203, AFTER TAKEOFF FROM BOS, CREW COULD NOT RETRACT THE LANDING GEAR. THE GEAR HANDLE WOULD NOT MOVE UP PAST THE OFF POSITION. FLIGHT RETURNED TO THE F
- [SDR SB05128](https://openairdocs.org/sdr/SB05128), Oct 8, 2005: ACTUATOR. FAULTY. PHL - FLT1243 - ON APPROACH TO PHL, WHEN AUTO PILOT WAS MANUALLY DISCONNECTED AT 1,000 FT AGL, THE AIRCRAFT ROLLED TO THE LEFT. AILERON TRIM SYSTEM WAS FOUND TO
- [SDR USAA200506002](https://openairdocs.org/sdr/USAA200506002), Jun 13, 2005: SKIN. CRACKED. A 2.625 INCH CRACK IN FUSELAGE SKIN AT STR 3L, STA 727D. INSTALLED DOUBLER PER EA 81022.
- [SDR USAA050085](https://openairdocs.org/sdr/USAA050085), Jan 19, 2005: THRESHOLD. CORRODED. PIT - Q3 - WEB PLATE, .2500 INCH AROUND, CORROSION; LEVEL 1; TASK NR C53-202-01; AFT CARGO DOOR THRESHOLD AROUND NUT PLATE HOLES. DEFECTIVE PART REPLACED WITH I
- [SDR USAA050083](https://openairdocs.org/sdr/USAA050083), Jan 5, 2005: STRINGER. CRACKED. PIT - FOUND STRINGER CRACKED .3750 INCH AT S-8 UPPER STRINGER AT WBL 355 AT ATTACH BOLT ON, RT WING. INSTALLED REPAIR ANGLES PER EA 79684. (M)
- [SDR USAA050071](https://openairdocs.org/sdr/USAA050071), Jan 4, 2005: SKIN. TORN. PIT - FOUND SKIN WITH .5 INCH TEAR, STATION 1025 LBBL 33. PART REPLACED PR JOB CARD J3-58-53500-C-010. (M)
- [SDR USAA050078](https://openairdocs.org/sdr/USAA050078), Jan 3, 2005: INTERCOSTAL. CRACKED. PIT - FOUND INTERCOSTAL CRACKED .5 INCH, AT KEEL BEAM BETWEEN STATION 500 AND 520 IN DISTRIBUTION BAY. DEFECTIVE PART REPLACED WITH IDENT PART PER SRM 51-40-02.
- [SDR USAA050079](https://openairdocs.org/sdr/USAA050079), Jan 2, 2005: STRINGER. CRACKED. PIT - FOUND STRINGER CRACKED .5 INCH, RT WING WBL 479 AT S-8. REPAIR ANGLES PER EA 79684. (M)
- [SDR USAA050080](https://openairdocs.org/sdr/USAA050080), Jan 2, 2005: STRINGER. CRACKED. PIT - FOUND STRINGER CRACKED .5 INCH, RT WING WBL 355 AT S-8. REPAIR ANGLES PER EA 79684. (M)
- [SDR USAA050077](https://openairdocs.org/sdr/USAA050077), Jan 1, 2005: STRINGER. CRACKED. PIT - FOUND UPPER STRINGER 2 INCH CRACK, WBL 505 RT WING. INSTALLED REPAIR ANGLES WITH MINOR DEVIATION PER EA 79684 AND SRM 57-00-03. (M)
- [SDR USAA050075](https://openairdocs.org/sdr/USAA050075), Jan 1, 2005: STIFFENER. CRACKED. PIT - FOUND STIFFENER CRACKED .75 INCH, MAIN LANDING GEAR WHEEL WELL BS 663.75 AT LBL 6.15. REPLACED STIFFENER PER EA 75002 AND BOEING DWG 65-45402. (M)
- [SDR USAA050076](https://openairdocs.org/sdr/USAA050076), Jan 1, 2005: SUPPORT BRACKET. CRACKED. PIT - FOUND ANTENNA CHANNEL, SUPPORT BRACKETS WITH THREE .5 INCH CRACKS, BETWEEN STATION 500/500A, STRINGER 28L-28R, VHF-2 ANTENNA CHANNEL. DEFECTIVE PART REPLA
- [SDR USAA050074](https://openairdocs.org/sdr/USAA050074), Jan 1, 2005: CREASE BEAM. CRACKED. PIT - FOUND CREASE BEAM CRACKED 2.5 INCHES, AFT OF FRAME 616 RT SIDE CREASE BEAM. MODIFIED PART INSTALLED PER TYPICAL REPAIR 53-10-02 REV A. (M)
- [SDR USAA050170](https://openairdocs.org/sdr/USAA050170), Jan 1, 2005: SKIN. BENT. PIT - FOUND SLAT EXT SKIN BENT AREA 3.5 INCH BY 1.5 INCH AREA, NR 1 SLAT UPPER T/E SURFACE INBOARD END. REMOVED DAMAGED AREA, INSTALLED FILLER AND INTERNAL DOUB
- [SDR USAA050082](https://openairdocs.org/sdr/USAA050082), Jan 1, 2005: WEB. CRACKED. PIT - FOUND WEB CRACKED 1.25 INCH, STATION 927-947.5 INTERCOSTAL CRACKED 1.25 INCH FROM FORWARD CORNER. INSTALLED SAME PART PER DWG 69-36656. (M)
- [SDR USAA040081A](https://openairdocs.org/sdr/USAA040081A), Jan 1, 2005: FLANGE. CRACKED. FOUND FLANGE CRACKED .5 INCH,PANEL 582-8R OPENING IN RT PYLON. STOP DRILLED THE CRACK, INSTALLED DOUBLER PER TYPICAL REPAIR 54-30-07. (M)
- [SDR USAA050053](https://openairdocs.org/sdr/USAA050053), Jan 1, 2005: SKIN. CRACKED. PIT - FOUND NR 1 SLAT WITH .125 INCH CRACKS ON 6 RIVET HOLES, CENTER OF SLAT BY ACTUATOR MOUNT LOWER SKIN. INSTALLED DOUBLER PER SRM 57-43-01 FIG 206. (M)
- [SDR USAA050050](https://openairdocs.org/sdr/USAA050050), Jan 1, 2005: INTERCOSTAL. CRACKED. PIT - FOUND INTERCOSTAL CRACKED .25 INCH, INTERCOSTAL AT BL0 BETWEEN STATION 344 AND 360. INSTALLED DOUBLER, STOP DRILLED PER SRM 51-70-11. (M)
- [SDR USAA050073](https://openairdocs.org/sdr/USAA050073), Jan 1, 2005: BEAM. CRACKED. PIT - FOUND BEAM CRACKED .75 INCH, STATION 616 BELOW RT SIDE CREASE BEAM. ROUTED OUT CRACK, INSTALLED FILLER AND REPAIR ANGLE PER TYPICAL REP 53-62-01. (M)
- [SDR USAA050072](https://openairdocs.org/sdr/USAA050072), Jan 1, 2005: INTERCOSTAL. CRACKED. PIT - FOUND INTERCOSTAL CRACKED .125 INCH, FORWARD END INTERCOSTAL FASTENER BS 328 LBBL 44. REPLACED INTERCOSTAL PER SRM 53-10-51. (M)
- [SDR USAA050068](https://openairdocs.org/sdr/USAA050068), Jan 1, 2005: PANEL. DELAMINATED. PIT - FOUND PANEL DELAMINATED, INBOARD AND OUTBOARD ENDS OF NR 5 SLAT PANEL. INSTALLED DOUBLER PER SRM 51-70-10. (M)
- [SDR USAA050066](https://openairdocs.org/sdr/USAA050066), Jan 1, 2005: ANGLE. BROKEN. PIT - FOUND ANGLES BROKEN, RAM AIR INLET DUCT UPPER SUPPORT LEFT SIDE. DEFECTIVE PART REPLACED WITH IDNT PART PER TYPICAL REPAIR 21-50-07C. (M)
- [SDR USAA050056](https://openairdocs.org/sdr/USAA050056), Jan 1, 2005: ATTACH FITTING. CRACKED. PIT - FOUND ATTACH CLIP CRACKED .125 INCH, STRINGER TO FRAME ATTACH CLIP AT BS 706, S-11L. DEFECTIVE PART REPLACED WITH IDENT PART PER BOEING DWG 66-23574. (M)
- [SDR USAA050055](https://openairdocs.org/sdr/USAA050055), Jan 1, 2005: DOOR FRAME. CRACKED. PIT - FOUND FORWARD ENTRY DOOR CRACKED .125 INCH, DOOR FRAME NR 6 DOOR STOP AFT SIDE. CUT OUT DAMAGE, INSTALLED DOUBLER PER TYPICAL REP 52-10-16. (M)
- [SDR USAA050052](https://openairdocs.org/sdr/USAA050052), Jan 1, 2005: SKIN. CHAFED. PIT - FOUND FLAP SKIN LEADING EDGE WITH CHAFE MARK .020 BY 4.25 INCH LONG BY .5 INCH WIDE, RT OUTBOARD MID FLAP ADJACENT TO OUTBOARD FLAP TRACK. (M)
- [SDR USAA050051](https://openairdocs.org/sdr/USAA050051), Jan 1, 2005: SKIN. CRACKED. PIT - FOUND NR 3 SLAT CRACKED .125 INCH, LOWER SURFACE AT MID SPAN RIVET HOLE. INSTALLED DOUBLER PER SRM 57-43-01 FIG 206. (M)
- [SDR USAA050048](https://openairdocs.org/sdr/USAA050048), Jan 1, 2005: STRINGER. CRACKED. PIT - FOUND STRINGER CRACKED .125 INCH, FRAME 380 AT S16R. REPAIR FILLER AND FABRICATED SHEAR TIE PR SRM 53-00-07. (M)
- [SDR USAA050067](https://openairdocs.org/sdr/USAA050067), Jan 1, 2005: FRAME. BROKEN. PIT - FOUND FRAME BROKEN OUT EDGES, DOOR FRAME STATION 492 AT STATION 27R, LOWER AFT CORNER OF CARGO DOOR FRAME. FABRICATED DOUBLER PER SRM 51-70-13. (M)
- [SDR USAA050057](https://openairdocs.org/sdr/USAA050057), Jan 1, 2005: BEAM. CRACKED. PIT - FOUND BEAM CRACKED 1 INCH, FORWARD OF FRAME 639 RIGHT SIDE CREASE BEAM. MODIFIED PART C/C 1109171 AND INSTALLED PER TYPICAL REPAIR 53-10-02 REV A. (M)
- [SDR USAA050054](https://openairdocs.org/sdr/USAA050054), Jan 1, 2005: ANGLE. CRACKED. PIT - FOUND ANGLE CRACKED .25 INCH LONG, EDGE OF SUPPORT ANGLE AT FS 294.5, FORWARD LOWER CORNER AT FLOOR LINE. DEFECTIVE PART REPLACED WITH IDENT PART PER SRM 
- [SDR USAA050070](https://openairdocs.org/sdr/USAA050070), Jan 1, 2005: SKIN. CHAFED. PIT - FOUND SKIN CHAFED, .023 INCH DEEP, SKIN STATION 860-880 AT DORSAL FIN. INSTALLED DOUBLER, TRIPLER AND BONDED STAINLESS RUB STRIP PER SRM 53-60-01 FIG 209.
- [SDR USAA050065](https://openairdocs.org/sdr/USAA050065), Jan 1, 2005: CLIP. BROKEN. PIT - FOUND BROKEN FRAME CLIP, STATION 597 STRINGER 8R. REMOVED AND REPLACED FRAME CLIP PER SRM 51-40-00. (M)
- [SDR USAA050049](https://openairdocs.org/sdr/USAA050049), Jan 1, 2005: FRAME. CRACKED. PIT - FOUND RIVET CRACKED .125 INCH, FRAME 360, RIVET AT S9L. INSTALLATION OF TWO, REPAIR ANGLES PER TYP REP 53-10-20A. (M)
- [SDR USAA050069](https://openairdocs.org/sdr/USAA050069), Jan 1, 2005: SKIN. DELAMINATED. PIT - FOUND SLAT DELAMINATED 4 INCHES BY 6 INCHES, NR 3 SLAT. REMOVED TOP SKIN CORE AND DAMAGE, INSTALLED FILLER, DOUBLER PER SRM 51-70-09. (M)
- [SDR USAA050089](https://openairdocs.org/sdr/USAA050089), Jan 1, 2005: FLOOR SUPPORT. CORRODED. PIT - Q3 - FLOOR SUPPORT, 1 INCH X 2 INCH AT 3 AREAS; CORROSION; LEVEL 1; TASK NR C53-107-02, STA 947.5-966 RBBL. REMOVED AND REPLACED FLOOR SUPPORT PER SRM 51-
- [SDR USAA050088](https://openairdocs.org/sdr/USAA050088), Jan 1, 2005: INTERCOSTAL. CORRODED. PIT - Q3 - INTERCOSTAL, 1 INCH DIA (4 EA AREAS) CORROSION ; LEVEL 1; TASK NR C53-107-01, RBBL 10 BS 312 TO 328. DEFECTIVE PART REPLACED WITH IDENT PART IAW SRM 
- [SDR USAA050087](https://openairdocs.org/sdr/USAA050087), Jan 1, 2005: ANGLE. CORRODED. PIT - Q3 - ANGLE, 1 INCH DIA. SPOT; EXFOLIATED CORROSION; BS 530, RT AT KEELBEAM, S-27R. KEELBEAM SECTION, -2 DOUBLER, -1 STRAP IAW TYP. REP. 53-60-09.
- [SDR USAA050086](https://openairdocs.org/sdr/USAA050086), Jan 1, 2005: FLOORBEAM. CORRODED. FLOORBEAM, 1INCH X 1 INCH AREA (2 EA) CORROSION; LEVEL 1; TASK NR C53-107-01, STA 328 FROM RBBL TO IB SEAT TRACK. REMOVED CORRODED SECTION, FABRICATED NEW AND I
- [SDR USAA050084](https://openairdocs.org/sdr/USAA050084), Jan 1, 2005: THRESHOLD. CORRODED. PIT - Q3 - WEB PLATE, .2500 INCH AROUND, CORROSION; LEVEL 1; TASK NR C53-20201, AFT CARGO DOOR THRESHOLD; CORROSION AROUND NUT PLATE HOLES. DEFECTIVE PART REPLA
- [SDR USA2004F00093](https://openairdocs.org/sdr/USA2004F00093), Jun 26, 2004: CIRCUIT BREAKER. TRIPPED. ON APPROACH, CREW DID NOT RECEIVE ANY LANDING GEAR INDICATION LIGHTS AFTER GEAR EXTENSION. A MISSED APPROACH WAS EXECUTED. CREW TESTED THE LIGHTS BUT HAD NO ILL
- [SDR USAA040029](https://openairdocs.org/sdr/USAA040029), Feb 28, 2004: FRAME. CORRODED. PIT - FOUND FRAME CORRODED 6 INCHES BY 4 INCHES, BLO '0' AT Y FRAME STATION 1016 AT 6 O'CLOCK. Y FRAME LOWER LEGS AND WEB SKIN DOUBELR EPR EO 5302V112 AND SRM 5
- [SDR USAASB03218](https://openairdocs.org/sdr/USAASB03218), Dec 19, 2003: OUTFLOW VALVE. FAILED. EN ROUTE FROM PIT TO IND, AT FL200, THE CABIN ALTITUDE WARNING HORN SOUNDED WITH NO AUTO FAIL LIGHT. CREW DESCENDED FLIGHT TO 12,000 FEET AND USED MANUAL AC TO 
- [SDR USAASB03117](https://openairdocs.org/sdr/USAASB03117), Jul 20, 2003: VIDEO MONITOR. ODOR. CLT - FLT 1009 - AFTER TAKEOFF FROM CLT, AT APPROXIMATELY 7,000 FEET, THE FLIGHT ATTENDANT REPORTED TO THE FLIGHT CREW A STRONG ELECTRICAL ODOR IN THE MID AND A
- [SDR USAA020387](https://openairdocs.org/sdr/USAA020387), Oct 4, 2002: ANGLE. CRACKED. PIT - FOUND VERTICAL Z-ANGLE CRACKED IN HALF, CENTER OF ANGLE FORWARD BULKHEAD LEFT OF W/W STATION 663 LBBL 6.15. INSTALLED TEMP SUPPORT ANGLE AND STRAPS EPR EA
- [SDR USAASB02142](https://openairdocs.org/sdr/USAASB02142), Jul 26, 2002: WIRE. BROKEN. SYR - MAINTENANCE FOUND THE EMERGENCY EVACUATION LIGHTS AT SEAT ROWS 8, 9 AND 10L LEFT SIDE, INOPERATIVE. MAINTENANCE REPAIRED A BROKEN WIRE. OPERATIONAL CHECK 
- [SDR USAA020132](https://openairdocs.org/sdr/USAA020132), Mar 25, 2002: STRINGER. DAMAGED. TPA - FOUND STRINGER HAS DEFECTIVE FASTENER HOLES, FS 616, S3L STRINGER TIE CLIP. REMOVED TEMP REPAIR, SPLICED IN NEW SECTION OF STRINGER PER SRM 53-00-03 FIG 2

All 65: https://openairdocs.org/deregistered/N522AU-2008-02-12/reports.md

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