# N526AU: 1988 Boeing 737-3B7, registration cancelled 2008-08-25

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: August 25, 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: 23861
- Year built: 1988
- Type of aircraft: Fixed wing multi engine
- Engine type: Turbo-fan
- Airworthiness: Standard, transport
- Airworthiness date: July 27, 1988
- Certificate issued: November 3, 2006
- Last registry action: November 3, 2006
- Mode S code: A69F4B
- 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/N526AU
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=526AU
- Page: https://openairdocs.org/deregistered/N526AU-2008-08-25

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 (86, newest 50)

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

- [SDR USAA920081310](https://openairdocs.org/sdr/USAA920081310), Jul 2, 2008: BATTERY. DISCHARGED. MCN - B01 - EEL - SEVERAL EMERGENCY LIGHTS OUT IN CABIN. REPLACED CENTER EMERGENCY BATTERY IAW B737 AMM 33-51-51-2. (S)
- [SDR USAA920080651](https://openairdocs.org/sdr/USAA920080651), Mar 20, 2008: SKIN. CRACKED. CLT - MAJOR REPAIR - C6 CHECK - CRACKED FUSELAGE SKIN BS 727E, S22L. REPAIRED FUSELAGE SKIN, BS 727E. S22L IAW B737 SRM 53-00-01.
- [SDR USAA920080652](https://openairdocs.org/sdr/USAA920080652), Mar 16, 2008: FLAP. DELAMINATED. CLT - MAJOR REPAIR - C6 CHECK - RIGHT WING OUTBOARD TRAILING EDGE FLAP HAS AREA OF DELAMINATION. REPLACED RIGHT WING OUTBOARD TRAILING EDGE FLAP IAW B737 SRM 27
- [SDR SB07084](https://openairdocs.org/sdr/SB07084), Sep 28, 2007: LIGHT. NONE. DFW - MAINTENANCE REPORTED THE FLOOR EMERGENCY ESCAPE PATH LIGHTING AT SEAT ROWS 9 AND 11, LEFT-HAND SIDE, INOPERATIVE. MAINTENANCE FOUND THAT THIS IS A NORMAL 
- [SDR USAA070260](https://openairdocs.org/sdr/USAA070260), Apr 4, 2007: SKIN. CRACKED. SEVERAL .125 INCH CRACKS, NR 2 SLAT LOWER TRAILING EDGE SKIN BETWEEN HET TUBE & INBOARD AUX TRACK HAS CRACK. CUT OUT DAMAGE & INSTALLED DOUBLER PER SRM 57-43-01
- [SDR USAA200701004](https://openairdocs.org/sdr/USAA200701004), Jan 19, 2007: TIE CLIP. CRACKED. A 1 INCH CRACK FOUND AT STA 294.5, STR 11, CLIP. REMOVED & REPLACED CRACKED TIE CLIP PER EO 5305V203 (DROP-IN A/C).
- [SDR USAASB06102](https://openairdocs.org/sdr/USAASB06102), Oct 19, 2006: WINDSHIELD. CRACKED. PHL FLT1428 - EN ROUTE FROM RDU TO PHL, CREW REPORTED THE CAPTAINS'S NR 1 WINDOW OUTER PANE CRACKED. OBSERVED ARCING FROM THE UPPER RIGHT SIDE, THEN CRACKING. F
- [SDR USAA060591](https://openairdocs.org/sdr/USAA060591), Apr 18, 2006: SKIN. CRACKED. FOUND SKIN CRACKED, BS 328 S17R. REMOVED DAMAGE, FABRICATED AND INSTALLED FILLER IAW SRM 53-10-01 REP 2, DEFECT SIZE: .75".
- [SDR USAA050880](https://openairdocs.org/sdr/USAA050880), Jul 14, 2005: FLANGE. WORN. CLT - Q2 - KEELBEAM FLANGE, 60 INCHES SURFACE WEAR. FUSELAGE KEELBEAM LT OB FLANGE STA 664-727. INSTALLED REPAIR STRAP IAW EA. (K)
- [SDR USAA050838](https://openairdocs.org/sdr/USAA050838), Jul 7, 2005: STIFFENER. CORRODED. CLT - FOUND STIFFENER CORRODED 2 INCHES, STATION 227.8, BL 0 ON VERTICAL STIFFENER. REMOVED DAMAGE. FABRICATED AND INSTALLED REPAIR PARTS IAW EA 69945. (M)
- [SDR USAA050839](https://openairdocs.org/sdr/USAA050839), Jul 7, 2005: BEAM. CRACKED. CLT - FOUND BEAM CRACKED 1.25 INCH, AFT OF RIGHT AILERON AT TRAILING EDGE. INSTALLED A NEW BEAM IAW SRM 57-51-02. (M)
- [SDR USAA050840](https://openairdocs.org/sdr/USAA050840), Jul 7, 2005: ANGLE. CORRODED. CLT - FOUND TRANSITION ANGLE CORRODED, TRANSITION ANGLE IN AFT CARGO BETWEEN STATION 727C AND STATION 827. REMOVED DAMAGE, INSTALLED TRANSITION ANGLE IAW SRM 51
- [SDR USAA050841](https://openairdocs.org/sdr/USAA050841), Jul 7, 2005: FLOORBEAM. CORRODED. CLT - FOUND FLOORBEAM TEE CAP CORRODED 1 INCH, AT BS 986.5, LBL 31. REMOVED AND REPLACED UPPER T-CAP OF FLOORBEAM IAW TYPICAL REPAIR 53-10-05, SRM 53-00-51. (M)
- [SDR USAA050842](https://openairdocs.org/sdr/USAA050842), Jul 7, 2005: INTERCOSTAL. CRACKED. CLT - FOUND INTERCOSTAL SUPPORT CRACKED 1.4 INCHES, FS 295 AT STRINGER S16L. FABRICATED AND INSTALLED NEW INTERCOSTAL IAW SRM 53-10-15M SRM 51-10-02. (M)
- [SDR USAA050843](https://openairdocs.org/sdr/USAA050843), Jul 7, 2005: STIFFENER. CORRODED. CLT - FOUND STIFFENER CORRODED 2 INCHES, STATION 227.8, BL 0 ON VERTICAL STIFFENER. REMOVED DAMAGE. FABRICATED AND INSTALLED REPAIR PARTS IAW EA 69945. (M)
- [SDR USAA050844](https://openairdocs.org/sdr/USAA050844), Jul 7, 2005: ANGLE. CORRODED. FOUND CHORD ANGLE CORRODED .8 INCHES, LOWER CHORD ANGLE AT BS 227.8. REMOVED DAMAGE. FABRICATED AND INSTALLED REPAIR PARTS IAW EA 96645 AND BOEING DWG 69-38740.
- [SDR USAA050845](https://openairdocs.org/sdr/USAA050845), Jul 7, 2005: INTERCOSTAL. CORRODED. CLT - FOUND INTERCOSTAL CORRODED 6 INCHES, AFT OF FORWARD E/E DOOR AT BL 0, BS 219.8 TO 227.8. REMOVED CORRODED INTERCOSTAL. FABRICATED AND INSTALLED NEW PART I
- [SDR USAA050846](https://openairdocs.org/sdr/USAA050846), Jul 7, 2005: SKIN. DELAMINATED. CLT - FOUND ELEVATOR TOP SKIN CRACKED 3 INCHES TOP SURFACE. MAJOR, COMPOSITE REPAIR IAW EA 96681. (M)
- [SDR USAA050832](https://openairdocs.org/sdr/USAA050832), Jul 5, 2005: STRINGER. CORRODED. CLT - FOUND STRINGER CORRODED 12 INCHES, CARGO FLOOR STRINGERS AT STATION 773. REPLACED OUT OF LIMITS STRINGER SECTIONS IAW SRM 53-60-53 AND TR 53-10-06B. (M)
- [SDR USAA050833](https://openairdocs.org/sdr/USAA050833), Jul 5, 2005: ANGLE. CORRODED. CLT - FOUND TRANSITION ANGLE CORRODED 8 INCHES, IN AFT CARGO BETWEEN STATION 727C AND STATION 827. REMOVED DAMAGE, FABRICATED AND INSTALLED REPAIR PARTS IAW SRM
- [SDR USAA050834](https://openairdocs.org/sdr/USAA050834), Jul 5, 2005: WEB. CORRODED. CLT - FOUND WEB CORRODED 10 INCHES, UNDER STRAP AT THE AFT CARGO COMPARTMENT DOOR OPENING. REMOVED DAMAGE, FABRICATED AND INSTALLED NEW PART IAW BOEING DWG 65-4
- [SDR USAA050835](https://openairdocs.org/sdr/USAA050835), Jul 5, 2005: STRINGER. CORRODED. CLT - FOUND STRINGERS CORRODED 12 INCHES, CARGO FLOOR STRINGERS AT STATION 773. REPLACE OUT OF LIMITS STRINGER SECTION IAW SRM 53-60-53 AND TR 53-10-06B. (M)
- [SDR USAA050823](https://openairdocs.org/sdr/USAA050823), Jul 1, 2005: SKIN. DENTED. PIT - FOUND SKIN DENTED 2 INCHES BY 2 INCHES, DENT ONE BS 500-500A, S20R-S21R, DENT 2 AND 3 AT BS 500A-500B S19R-S20R. CUT OUT THREE DENTS, FABRICATED TRIPLERS,
- [SDR USAA050819](https://openairdocs.org/sdr/USAA050819), Jun 30, 2005: ANGLE. CORRODED. CLT - FOUND TRANSITION ANGLE CORRODED 8 INCHES, IN AFT CARGO BETWEEN STATION 727C AND AND STATION 827. REMOVED CORRODED ANGLE AND INSTALLED NEW ANGLE IAW SRM 51
- [SDR USAA050820](https://openairdocs.org/sdr/USAA050820), Jun 30, 2005: WEB. CORRODED. CLT - FOUND WEB CORRODED 10 INCHES, WEB UNDER STRAP AT THE AFT CARGO COMPARTMENT DOOR OPENING. REMOVED DAMAGE, FABRICATED AND INSTALLED NEW PART IAW BOEING DWG 
- [SDR USAA050812](https://openairdocs.org/sdr/USAA050812), Jun 29, 2005: SUPPORT ANGLE. CRACKED. CLT - Q2 - SUPPORT ANGLE, 1 INCH, CRACK, STA 540 AND STR 22R. FABRICATED AND INSTALLED REPAIR PART. (K)
- [SDR USAA050811](https://openairdocs.org/sdr/USAA050811), Jun 29, 2005: BRACKET. WORN. CLT - Q2 - ANGLE BRACKET, 2 INCHES X 3 INCHES, WORN AND CHAFED AREA, LWR WING PANEL OB OF NR 2 FLAP TRACK. FABRICATED AND INSTALLED NEW ANGLE IAW SRM. (K)
- [SDR USAA050810](https://openairdocs.org/sdr/USAA050810), Jun 29, 2005: SKATE ANGLE. WORN. CLT - Q2 - SKATE ANGLE, 2 INCHES X 4 INCHES, WORN AREA, AFT END OF THE RT SKATE ANGLE AT THE BASE OF THE VERTICAL FIN TO FUSELAGE. REMOVED DAMAGE, FABRICATED AN
- [SDR USAA050809](https://openairdocs.org/sdr/USAA050809), Jun 29, 2005: ANGLE. CORRODED. CLT - Q2 - L-ANGLE, 6 INCH FRETTING, L-ANGLE AT BS 1016 FORWARD OF THE RT FWD VERTICAL FIN MOUNT. FABRICATED AND REPLACED NEW L ANGLE. (K)
- [SDR USAA050808](https://openairdocs.org/sdr/USAA050808), Jun 29, 2005: ANGLE. CRACKED. CLT - Q2 - HORIZONTAL ANGLE, 1 INCH CRACK, STA 695 LT OF BL0. REMOVED FABRICATED AND INSTALLED NEW L ANGLE IAW DWG. (K)
- [SDR USAA050807](https://openairdocs.org/sdr/USAA050807), Jun 29, 2005: FLOOR SUPPORT. CRACKED. CLT - Q2 - FLOOR SUPPORT, 1 INCH CRACK, FLOOR SUPPORT AT STA 500D IN A/C DISTRIBUTION BAY. REMOVED DAMAGED WEB, FABRICATED NEW WEB IAW SRM. (K)
- [SDR USAA050806](https://openairdocs.org/sdr/USAA050806), Jun 29, 2005: INTERCOSTAL. DENTED. CLT - Q2 - INTERCOSTAL, 2 INCHES X 1 INCH, DENT, STR 25L BETWEEN FRAMES 440 AND 420. FABRICATED AND INSTALLED NEW INTERCOSTAL IAW DRWG. (K)
- [SDR USAA050805](https://openairdocs.org/sdr/USAA050805), Jun 29, 2005: MOUNT. CORRODED. CLT - Q2 - LAV MOUNT, 1 INCH X 3 INCHES, CORROSION, LT AFT LAV OB MOUNT. FABRICATED AND INSTALLED NEW MOUNT IAW WITH DRWG. (K)
- [SDR USAA050804](https://openairdocs.org/sdr/USAA050804), Jun 29, 2005: THRESHOLD. CORRODED. CLT - Q2 - WEB, 48 INCHES, CORROSION FWD ENTRY DOORWAY THRESHOLD WEB. FABRICATED WEB AND ASSOCIATED REPAIR PARTS AND INSTALLED DRWG IAW SRM. (K)
- [SDR USAA050803](https://openairdocs.org/sdr/USAA050803), Jun 29, 2005: STRINGER. CORRODED. CLT - Q2 - CARGO FLOOR STRINGER, 6 INCH, CORROSION, AFT CARGO FLOOR STRINGERS AT STA 736 FROM LBBL 17.2 TO RBBL 13.8. REMOVED AND TREATED CORROSION IAW SRM. (K)
- [SDR USAA050781](https://openairdocs.org/sdr/USAA050781), Jun 20, 2005: SPLICE. CRACKED. CLT - FOUND STRINGER SPLICE CRACKED, .4 INCH AND .3 INCH, STATION 908, S4L. REMOVED OLD STRINGER SPLICE, INSTALL NEW SPLICE IAW SRM 53-00-01 FIG 229. (M)
- [SDR USAA050780](https://openairdocs.org/sdr/USAA050780), Jun 20, 2005: CHANNEL. WORN. CLT - FOUND L-CHANNEL FRETTING WEAR .5 INCH BY 3 INCHES, FORWARD OF THE LEFT FORWARD VERTICAL FIN MOUNT AT BS 1016 NR 2412. FABRICATED NEW ANGLE AND INSTALLED I
- [SDR USAA050779](https://openairdocs.org/sdr/USAA050779), Jun 20, 2005: TEAR STRAP. DEBONDED. CLT - FOUND TEAR STRAP DISBOND 15 INCHES, BS 867-887, S17-19 RT. INSTALLED RIVETS THROUGH SKIN AND STRAPS AS REQUIRED IAW SRM 53-00-01 FIG 225. (M)
- [SDR USAA050778](https://openairdocs.org/sdr/USAA050778), Jun 20, 2005: TEAR STRAP. DEBONDED. CLT - FOUND TEAR STRAP DISBOND 8 INCHES, BS 857, S16R-S17R. INSTALLED RIVETS TO SECURE IAW SRM 53-00-01, FIG 225 DET 3. (M)
- [SDR USAA050777](https://openairdocs.org/sdr/USAA050777), Jun 20, 2005: TEAR STRAP. DEBONDED. CLT - FOUND DEBONDED TEAR STRAP 11 INCHES, BS 877, S16R-17R. ADDED RIVETS IAW SRM 53-00-01 FIG 225 DET 3. (M)
- [SDR USAA050775](https://openairdocs.org/sdr/USAA050775), Jun 20, 2005: FRAME. CRACKED. CLT - FOUND FRAME CRACKED .25 INCH, STATION 827 STRINGER 9L. CUT OUT CRACK, INSTALLED NEW REPAIR ANGLES IAW 53-10-20B. (M)
- [SDR USAA050774](https://openairdocs.org/sdr/USAA050774), Jun 16, 2005: FLOORBEAM. CORRODED. FOUND FLOORBEAM CORRODED 3 INCHES, BS 967, LBL 43. FABRICATED NEW T-CAP FOR FLOORBEAM PER SRM 53-00-51, SAME AS PREVIOUS REPAIR. (M)
- [SDR USAA050773](https://openairdocs.org/sdr/USAA050773), Jun 16, 2005: SKIN. GOUGED. CLT - FOUND SKIN GOUGED .125 INCH BY 1 INCH BY .060 INCH, LEADING EDGE RADIUS OF LEFT FOR FLAP .22 INCH FROM INBOARD END. REMOVED DAMAGED AREA, 2.5 INCH BY 1 IN
- [SDR USAA050772](https://openairdocs.org/sdr/USAA050772), Jun 16, 2005: ANGLE. CORRODED. CLT - FOUND TRANSITIONAL ANGLE CORRODED 2 SQUARE INCHES, UNDERSIDE OF NUTPLATE OF RIGHT TRANSITION ANGLE AT DOOR FRAME BS 496. REMOVED DAMAGE, FABRICATED REPAIR
- [SDR USAA050771](https://openairdocs.org/sdr/USAA050771), Jun 16, 2005: ANGLE. CORRODED. CLT - FOUND TRANSITION ANGLE CORRODED 3 INCHES, RT TRANSITION ANGLE AT BS 492.4. REMOVED DAMAGED PART. FABRICATED AND INSTALLED NEW PART IAW 737 SRM 51-10-02. (
- [SDR USAA050770](https://openairdocs.org/sdr/USAA050770), Jun 16, 2005: SUPPORT ANGLE. CRACKED. CLT - FOUND SUPPORT ANGLE CRACKED 1 INCH, LOWER EDGE OF INTERCOSTAL AT FORWARD SIDE OF STATION 328, RBL 32. REMOVED DAMAGED STIFFENER, FABRICATED REPLACEMENT PA
- [SDR USAA050769](https://openairdocs.org/sdr/USAA050769), Jun 16, 2005: FLOORBEAM. CORRODED. CLT - FOUND FLOORBEAM T-CAP CORRODED 1 INCH, AT BS 986.5, LBL 31. REMOVED AND REPLACED UPPER T-CAP OF FLOORBEAM IAW TYPICAL REPAIR 53-10-05 AND SRM 53-00-51. (M
- [SDR USAA050749](https://openairdocs.org/sdr/USAA050749), Jun 9, 2005: ANGLE. CRACKED. CLT - FOUND L-ANGLE CRACKED 4 INCHES, RT SIDE STATION 291.5-295.5 AT FLOOR LEVEL. REMOVED DAMAGED. FABRICATED AND INSTALLED REPAIR PART IAW BOEING DWG 69-37402.
- [SDR USAA050742](https://openairdocs.org/sdr/USAA050742), Jun 8, 2005: SKIN. CRACKED. CLT - FOUND SKIN CRACKED 1 INCH, NR 2 PYLON LEADING EDGE SKIN. TRIMMED OUT DAMAGE FABRICATED AND INSTALLED FILLER AND DOUBLER. (M)
- [SDR USAA050743](https://openairdocs.org/sdr/USAA050743), Jun 8, 2005: STRINGER CLIP. CRACKED. CLT - FOUND TIE CLIP CRACKED .5 INCH, STATION 480 STRINGER 15R. REPLACED TIE CLIP IAW SRM 51-10-02. (M)

All 86: https://openairdocs.org/deregistered/N526AU-2008-08-25/reports.md

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