# Service difficulty reports: Boeing 747-121

A list on [Boeing 747-121](https://openairdocs.org/model/boeing-747-121.md).

Newest first. General aviation reporting is voluntary.

Page 1 of 61 · 3,030 reports

- [SDR UPS08452094](https://openairdocs.org/sdr/UPS08452094.md): Skin · corroded · Apr 29, 2008 · N683UP · Boeing 747121 · Fuselage Main, Plate/Skin
  > LOWER BELLY SKIN CORROSION. REPAIR DOUBLER INSTALLED AT STA 1780 SRT 50R PER SRM 53-30-03 FIG 1. CATEGORY B REPAIR REQUIRES REPEAT INSPECTION AT 15000 RIGHT CYCLES AND THEN EVERY 3000 FLIGHT CYCLES.
- [SDR UPS08451553](https://openairdocs.org/sdr/UPS08451553.md): Light · inoperative · Jan 24, 2008 · N683UP · Boeing 747121 · Emergency Lighting
  > EMERGENCY LIGHT ABOVE SLIDE IN COCKPIT INOP. DEFERRED PER MEL 33-15 ON ITEM M367673. SLAVED IN NEW BATTERY PACK POWER SUPPLY, NO HELP. REMOVED AND REPLACED EMERG EXIT SIGN IAW AMM 33-1-51-04. EXIT LIGHT ASSY REPLACED PER MM 33-50-00. OPERATION NOW CHECKS
- [SDR EIA2007207](https://openairdocs.org/sdr/EIA2007207.md): Battery Pack · discharged · Dec 10, 2007 · N480EV · Boeing 747121 · Emergency Lighting
  > CREW EXIT DOOR UPPER DECK SILL LIGHT INOP. BATTERY PACK OF X327 UPPER DECK AT STATION 403 RT REPLACED.
- [SDR UPS07451218](https://openairdocs.org/sdr/UPS07451218.md): Electronic Unit · smoke · Nov 26, 2007 · N683UP · Boeing 747121 · Fuel Flow Indicating
  > FUEL FLOW ELECTRONICS UNIT SMOKING. REMOVED AND REPLACED FUEL FLOW ELECTRONICS UNIT PER MM 73-31-02. OPS CHECK NORMAL.
- [SDR UPS07451203](https://openairdocs.org/sdr/UPS07451203.md): Battery Pack · discharged · Nov 26, 2007 · N683UP · Boeing 747121 · Emergency Lighting
  > AF L1 DOOR ENTRY EMERGENCY LIGHT WOULD NOT TEST. REMOVED AND REPLACED EMERGENCY LIGHT/BATTERY PACK ASSY WITH REF TO MM 33-51-07. OPS CHECK GOOD PER SAME.
- [SDR UPS07450948](https://openairdocs.org/sdr/UPS07450948.md): Web · cracked · Oct 16, 2007 · N683UP · Boeing 747121 · Fuselage Miscellaneous Structure
  > INSPECTION TYPE:C NWW RT SIDE PANEL STA 294 WL 170 SIDE PANEL WEB 1EA SUSPECT CRACK INDICATION FOUND ADJACENT LWR SIDE OF EXTERNAL STRAP APPROX. 0.5" LENGTH CRACK LENGTH 0.5" APPROX. NOSE WHEEL WELL SIDE PANEL REPAIRED AT BS 293 - BS 295 WL 170 AREA AS PER SR
- [SDR EIA2007134](https://openairdocs.org/sdr/EIA2007134.md): Light · no test · Jun 28, 2007 · N480EV · Boeing 747121 · Emergency Lighting
  > L/5 EMERGENCY LIGHT INOP. REMOVED AND REPLACED L/5 EMERGENCY LIGHT, OPS CK`D NORMAL PER B747 MM 33-51-06.
- [SDR EIA2007133](https://openairdocs.org/sdr/EIA2007133.md): Light · no test · Jun 28, 2007 · N480EV · Boeing 747121 · Emergency Lighting
  > EMERGENCY LIGHT AT THE TOP OF THE STAIRS GOES ON AND GOES RIGHT OUT. REPLACED EMERGENCY LIGHT AT TOP OF STAIRS, OPS CK`D NORMAL PER B747 MM 33-51-07.
- [SDR UPS07449805](https://openairdocs.org/sdr/UPS07449805.md): Lamp · inoperative · May 13, 2007 · N683UP · Boeing 747121 · Emergency Lighting
  > EMERGENCY LIGHT CONTROL SWITCH INDICATOR 1/2 INOP. RELAMPED EMERGENCY, OPS CHECK GOOD.
- [SDR UPS07449766](https://openairdocs.org/sdr/UPS07449766.md): Pressure Panel · cracked · May 7, 2007 · N682UP · Boeing 747121 · Fuselage Main, Bulkhead
  > INSPECTION TYPE:C ULTRASONIC INSP FOUND CRACK INDICATION AT BS 333 TO BS 334 BL 0 LEFT SIDE 1 INCH APPROX IN - LENGTH (CRACK LENGTH 0.68"). A REPAIR DOUBLER ADDED ON NOSE WHEEL WELL TOP PANEL UPPER SURFACE AT BTN BS 320 - BS 340 BL 0 IAW SRM 53-10-04 FIG 119
- [SDR EIA2007070](https://openairdocs.org/sdr/EIA2007070.md): Battery Pack · discharged · Apr 7, 2007 · N480EV · Boeing 747121 · Emergency Lighting
  > UPPER DECK EMERGENCY EXIT SIGN LIGHT AT CREW DOOR INOP. REQUIRES CHARGER AND BATTERY. REPLACED BATTERY CHARGER AND BATTERY PACK IN UPPER DECK EMERGENCY EXIT SIGN IAW 33-51-07 OPS CKD OL PER 33-51-07.
- [SDR UPS07449578](https://openairdocs.org/sdr/UPS07449578.md): Module · unknown · Mar 29, 2007 · N683UP · Boeing 747121 · Hydraulic System, Main
  > HYD SYSTEM 3 FAILURE PRESSURE & QUANTITY ZERO DURING FLAP RETRACTION. HYD SYSTEM PR & QT LIGHTS ON. REMOVED AND REPLACED MODULAR ASSY & LEAK CHECK IAW 29-11-23.
- [SDR UPS07449433](https://openairdocs.org/sdr/UPS07449433.md): Bear Strap · cracked · Mar 5, 2007 · N683UP · Boeing 747121 · Fuselage Main, Plate/Skin
  > INSPECTION TYPE:C RIGHT NR 3 PAX DOOR CUTOUT FWD LOWER CORNER CRACK REVEALED AT THE EDGE OF BEAR STRAP. CRACK LENGTH 2.5 INCHES APPROX. RIGHT NR 3 PAX DOOR CUTOUT FWD LOWER CORNER SKIN AND BEAR STRAP REPAIRED AS PER RS R53-41-35782 AND UPS EO B747-5330-15047
- [SDR UPS07449488](https://openairdocs.org/sdr/UPS07449488.md): Floor Support · cracked · Mar 1, 2007 · N683UP · Boeing 747121 · Fuselage Miscellaneous Structure
  > INSPECTION TYPE:C M/D BS 1220 LBL 98.8 FLOOR WEB SUPPORT FOUND CRACK AS MARKED. CRACK LENGTH.375 INCH. M/D BS 1220 LBL 98.8 FLOOR WEB SUPPORT REPAIRED AS PER RS R53-15-35777 AND UPS ENGINEERING FILE 747-53-20406.
- [SDR UPS07449497](https://openairdocs.org/sdr/UPS07449497.md): Skin · cracked · Feb 28, 2007 · N683UP · Boeing 747121 · Fuselage Main, Plate/Skin
  > INSPECTION TYPE:C RIGHT NR 3 PAX DOOR CUTOUT FWD LOWER CORNER 1EA FASTENER HOLE (IDENT H) FOUND THROUGH THICKNESS CRACKED AT 7 O/C POSITION AND.0625 INCH CRACKED TO FWD AT BOTTOM OF HOLES BORE AT 5 O/C POSITION (LOOKING I/B). RIGHT NR 3 PAX DOOR CUTOUT FWD L
- [SDR UPS07449496](https://openairdocs.org/sdr/UPS07449496.md): Skin · cracked · Feb 28, 2007 · N683UP · Boeing 747121 · Fuselage Main, Plate/Skin
  > INSPECTION TYPE:C RIGHT NR 3 PAX DOOR CUTOUT FWD LOWER CORNER 1EA FASTENER HOLE (IDENT G) FOUND CRACKED AT BEAR STRAP.125 INCH TO UPWARD AT 11 O/C POSITION (LOOKING I/B). RIGHT NR 3 PAX DOOR CUTOUT FWD LOWER CORNER SKIN AND BEAR STRAP REPAIRED AS PER RS R53-
- [SDR UPS07449495](https://openairdocs.org/sdr/UPS07449495.md): Skin · cracked · Feb 28, 2007 · N683UP · Boeing 747121 · Fuselage Main, Plate/Skin
  > INSPECTION TYPE:C RIGHT NR 3 PAX DOOR CUTOUT FWD LOWER CORNER 1EA FASTENER HOLE (IDENT D) FOUND CRACKED AT SKIN.125 INCH APPROX RUNNING FWD AT 5 O/C POSITION (LOOKING I/B). RIGHT NR 3 PAX DOOR CUTOUT FWD LOWER CORNER SKIN AND BEAR STRAP REPAIRED AS PER RS R5
- [SDR UPS07449494](https://openairdocs.org/sdr/UPS07449494.md): Skin · cracked · Feb 28, 2007 · N683UP · Boeing 747121 · Fuselage Main, Plate/Skin
  > INSPECTION TYPE:C RIGHT NR 3 PAX DOOR CUTOUT FWD LOWER CORNER 1E FASTENER HOLE (IDENT F) FOUND CRACKED AT BEAR STRAP.125 INCH APPROX RUNNING UPWARD AT 12 O/C POSITION (LOOKING I/B). CRACK LENGTH.125 INCH. RIGHT NR 3 PAX DOOR CUTOUT FWD LOWER CORNER SKIN AN
- [SDR UPS07449493](https://openairdocs.org/sdr/UPS07449493.md): Skin · cracked · Feb 28, 2007 · N683UP · Boeing 747121 · Fuselage Main, Plate/Skin
  > INSPECTION TYPE:C RIGHT NR 3 PAX DOOR CUTOUT FWD LOWER CORNER 1EA FASTENER HOLE (IDENT E) FOUND CRACKED AT SKIN AND BEAR STRAP.125 INCH TO UPWARD AT 12 O/C POSITION (LOOKING I/B). RIGHT NR 3 PAX DOOR CUTOUT FWD LOWER CORNER SKIN AND BEAR STRAP REPAIRED AS PE
- [SDR UPS07449492](https://openairdocs.org/sdr/UPS07449492.md): Skin · cracked · Feb 28, 2007 · N683UP · Boeing 747121 · Fuselage Main, Plate/Skin
  > INSPECTION TYPE:C RIGHT NR 3 PAX DOOR CUTOUT FWD COVER CORNER 1EA FASTENER HOLE (IDENT B) FOUND CRACKED AT BEAR STRAP.0625 INCH TO FWD AT 5 O/C POSITION (LOOKING I/B). CRACK LENGTH.0625 INCH. RIGHT NR 3 PAX DOOR CUTOUT FWD LOWER CORNER SKIN AND BEAR STRAP
- [SDR UPS07449491](https://openairdocs.org/sdr/UPS07449491.md): Skin · cracked · Feb 28, 2007 · N683UP · Boeing 747121 · Fuselage Main, Plate/Skin
  > INSPECTION TYPE:C 1EA FASTENER HOLE (IDENT A) FOUND CRACKED AT RIGHT NR 3 PAX DOOR CUTOUT AREA FWD LOWER CORNER AT SKIN I/B FACE CRACK LENGTH 0.040 INCH APPROX WHICH RUNNING FWD AT 5 O/C POSITION (LOOKING I/B). RIGHT NR 3 PAX DOOR CUTOUT FWD LOWER CORNER SKIN
- [SDR UPS07449490](https://openairdocs.org/sdr/UPS07449490.md): Skin · cracked · Feb 28, 2007 · N683UP · Boeing 747121 · Fuselage Main, Plate/Skin
  > INSPECTION TYPE:C RIGHT NR 3 PAX DOOR CUTOUT FWD LOWER CORNER 1EA FASTENER HOLE (IDENT C) FOUND CRACKED AT BEAR STRAP.0625 INCH AT 11 O/C POSITION AND ANOTHER CRACK AT SKIN AND BEAR STRAP.0625 INCH AT 5 O/C POSITION (LOCKING I/B). RIGHT NR 3 PAX DOOR CUTOUT
- [SDR UPS07449457](https://openairdocs.org/sdr/UPS07449457.md): Skin · cracked · Feb 28, 2007 · N683UP · Boeing 747121 · Fuselage Main, Plate/Skin
  > INSPECTION TYPE:C RIGHT NR 3 PAX DOOR CUTOUT FWD LOWER CORNER 1EA FASTENER HOLE (IDENT I) FOUND CRACK THRU THICKNESS AT 5:00 O/C POSITION (LOOKING I/B) CRACK LENGTH 2.5 INCH. RIGHT NR 3 PAX DOOR CUTOUT FWD LOWER CORNER SKIN AND BEAR STRAP REPAIRED AS PER RS R
- [SDR UPS07449467](https://openairdocs.org/sdr/UPS07449467.md): Frame · cracked · Feb 27, 2007 · N683UP · Boeing 747121 · Fuselage Main, Frame
  > INSPECTION TYPE:C M/D BS 820 STR 11-12R FRAME FOUND CRACK. CRACK LENGTH.875 - 1 INCH. M/D BS 820 STR 11-12R FRAME REPAIRED AS PER RS R53-12-35770. CONTINUE INSPECTION IS REQUIRED AS PER RS R53-12-35770 AND UPS EO B747-5310-26322.
- [SDR UPS07449425](https://openairdocs.org/sdr/UPS07449425.md): Stringer · cracked · Feb 27, 2007 · N683UP · Boeing 747121 · Fuselage Main, Longeron/Stringer
  > INSPECTION TYPE:C M/D BS 820-840 STR 10 LT STRINGER ATT WEB FOUND CRACKED. CRACK LENGTH.75 INCH. M/D BS 820-840 STR 10 LT ATTACH WEB REPAIRED AS PER SRM 51-40-03 FIG 1.
- [SDR UPS07449423](https://openairdocs.org/sdr/UPS07449423.md): Stringer · cracked · Feb 27, 2007 · N683UP · Boeing 747121 · Fuselage Main, Longeron/Stringer
  > INSPECTION TYPE:C M/D BS 820-840 S10 RIGHT STRINGER ATT WEB FOUND CRACK. CRACK LENGTH.625 INCH. M/D BS 820-840 STR 10R ATTACH WEB REPAIRED AS PER SRM 51-40-03 FIG 1.
- [SDR EIA2007020](https://openairdocs.org/sdr/EIA2007020.md): Smoke Detector · no test · Feb 22, 2007 · N480EV · Boeing 747121 · Smoke Detection
  > FOUND LOWER DECK NR 4 SMOKE DETECTOR WILL NOT TEST. REPLACED SMOKE DETECTOR IAW MM 26-16-00, ALL TESTS OK.
- [SDR UPS07449313](https://openairdocs.org/sdr/UPS07449313.md): Web · cracked · Feb 20, 2007 · N683UP · Boeing 747121 · Fuselage Miscellaneous Structure
  > INSPECTION TYPE:C AFT CARGO COMPT LT VERTICAL WEB FOUND CRACKED AT STA 1500 TO STA 1520 STR 34L AFT EDGE AREA. CRACK LENGTH.75 INCH. VERTICAL WEB REPLACED PER SRM 51-10-01 PG 9.
- [SDR UPS07449231](https://openairdocs.org/sdr/UPS07449231.md): Skin · cracked · Feb 19, 2007 · N682UP · Boeing 747121 · Fuselage Main, Plate/Skin
  > INSPECTION TYPE:C BS 460 STR 15R FOUND ONE EA FASTENER HOLE CRACKED AT SKIN BOND DOUBLER & STRAP. FX BS 460 STR 15R SKIN BOND DOUBLER & STRAP REPAIRED AS PER HX RS R53-11-35754 & UPS EO B747-5310-26195.
- [SDR UPS07449412](https://openairdocs.org/sdr/UPS07449412.md): Pressure Panel · corroded · Feb 17, 2007 · N683UP · Boeing 747121 · Fuselage Main, Bulkhead
  > INSPECTION TYPE:C LEFT BODY LANDING GEAR W/W PRESSURE DECK ATT WEB FOUND SURFACE CORROSION AT STA 1403 LBL 125. CORROSION BLEND OUT 0.034 X 1 X 1 INCH EXCEED SRM 53-10-01 FIG 1 LIMITS. LEFT BODY LANDING GEAR W/W PRESSURE DECK ATT WEB REPAIRED AT STA 1403 LBL
- [SDR UPS07449454](https://openairdocs.org/sdr/UPS07449454.md): Stringer · cracked · Feb 16, 2007 · N683UP · Boeing 747121 · Fuselage Main, Longeron/Stringer
  > INSPECTION TYPE:C BULK CARGO COMPT STRINGER FOUND CRACK AT STA 2185 STR 51R. CRACK LENTH.375 INCH. BULK CARGO COMPT BS 2185 STR 51R REPAIRED AS PER RS R53-11-35768 AND UPS ENGINEERING FILE NUMBER 747-53-20407.
- [SDR UPS07449443](https://openairdocs.org/sdr/UPS07449443.md): Skin · cracked · Feb 16, 2007 · N683UP · Boeing 747121 · Passenger/Crew Doors
  > INSPECTION TYPE:C M/D R3 DOOR SKIN FOUND CRACKED APPROX AT CTR LOWER PORTION. CRACK LENGTH.375 INCH. M/D R3 DOOR SKIN AT CTR LOWER PORTION AREA REPAIRED AS PER SRM 52-10-02 FIG 9.
- [SDR UPS07449436](https://openairdocs.org/sdr/UPS07449436.md): Door Frame · cracked · Feb 16, 2007 · N683UP · Boeing 747121 · Fuselage Main, Structure
  > INSPECTION TYPE:C RIGHT BS 2231 FRAME AT DOOR NR 5 BETWEEN S24R-25R FOUND 2EA HOLE CRACK. CRACK LENGTH.125 INCH,.25 INCH AND.1875 INCH. M/D RIGHT BS 2231 FRAME REVEAL, STRAP AND CHORD REPAIRED AS PER RS R53-62-35764. CONTINUE INSPECTION IS REQUIRED PER R
- [SDR UPS07449419](https://openairdocs.org/sdr/UPS07449419.md): Shear Tie · cracked · Feb 16, 2007 · N683UP · Boeing 747121 · Wing Main, Frame Structure
  > INSPECTION TYPE:C LEFT WING WS 469.8 FWD OF UPPER STR 29 SHEAR TIES FOUND CRACKED AS MARKED. CRACK LENGTH.5 INCH. LEFT WING WS 469.8 FWD OF UPPER STR 29 SHEAR TIE REPAIRED AS PER SRM 57-10-05 FIG 7.
- [SDR UPS07449416](https://openairdocs.org/sdr/UPS07449416.md): Door Frame · cracked · Feb 16, 2007 · N683UP · Boeing 747121 · Fuselage Main, Structure
  > INSPECTION TYPE:C M/D L5 DOOR UPPER FRAME FOUND CRACKED AT SEVERAL FASTENER HOLE AREA. CRACK LENGTH.375 INCH. M/D L5 DOOR UPPER FRAME REPLACED AND INSTALLED AS PER SRM 51-10-01 PG 9 & 51-30-02.
- [SDR UPS07449401](https://openairdocs.org/sdr/UPS07449401.md): Support · corroded · Feb 16, 2007 · N683UP · Boeing 747121 · Fuselage Miscellaneous Structure
  > INSPECTION TYPE:C BULK CARGO COMPT - STA 2080 LT SIDEWALL SUPPORT ANCHOR NUT AREA FOUND CORRODED AS MARKED. CORROSION BLEND OUT 0.038" X 1" X 1" EXCEED SRM 53-10-01 FIG 1 LIMITS. BULK CARGO COMPT BS 2080 LEFT SIDEWALL SUPPORT REPAIRED AS PER SRM 51-40-04 FIG
- [SDR UPS07449388](https://openairdocs.org/sdr/UPS07449388.md): Frame · cracked · Feb 16, 2007 · N683UP · Boeing 747121 · Passenger/Crew Doors
  > INSPECTION TYPE:C M/D R5 DOOR UPPER FRAME FOUND CRACKED AT SEVERAL FASTENER HOLE AREA. CRACK LENGTH.75 INCH. FRAME REPLACED AS PER SRM 51-10-01 PG 9 AND INSTALLED AS PER SRM 51-30-02.
- [SDR UPS07449378](https://openairdocs.org/sdr/UPS07449378.md): Support · corroded · Feb 16, 2007 · N683UP · Boeing 747121 · Fuselage Miscellaneous Structure
  > INSPECTION TYPE:C BULK CARGO COMPT - STA 1960 LEFT SIDEWALL SUPPORT ANCHOR NUT AREA FOUND CORRODED AS MARKED. CORROSION BLEND OUT 0.049" X.5" X 1" EXCEED SRM 53-10-01 FIG 1 LIMITS. BULK CARGO COMPT - STA 1960 LEFT SIDEWALL SUPPORT REPAIRED AS PER SRM 51-40-
- [SDR UPS07449376](https://openairdocs.org/sdr/UPS07449376.md): Skin · cracked · Feb 16, 2007 · N683UP · Boeing 747121 · Passenger/Crew Doors
  > INSPECTION TYPE:C M/D L3 DOOR SKIN FOUND CRACKED APPROX AT CTR LOWER PORTION. CRACK LENGTH.75 INCH. L3 DOOR SKIN REPAIRED AS PER SRM 52-10-02 FIG 9.
- [SDR UPS07449347](https://openairdocs.org/sdr/UPS07449347.md): Sill · cracked · Feb 16, 2007 · N683UP · Boeing 747121 · Fuselage Miscellaneous Structure
  > INSPECTION TYPE:C U/D RIGHT DOOR SILL BS 400 RBL TO FLOOR SUPPORT CHORD FOUND CRACKED. CRACK LENGTH:.75 INCH. FLOOR SUPPORT CHORD REPAIRED AS PER SRM 51-40-04 FIG 1.
- [SDR UPS07449319](https://openairdocs.org/sdr/UPS07449319.md): Support Fitting · cracked · Feb 16, 2007 · N683UP · Boeing 747121 · Fuselage Miscellaneous Structure
  > INSPECTION TYPE:C FWD CARGO COMPT AFT FIXED END STOP SUPPORT FITTING FOUND CRACK AT STA 980 RBL 45. CRACK LENGTH.75 INCH. FWD CARGO COMPT AFT FIXED END STOP SUPPORT FITTING REPLACED AS PER SRM 51-10-01 PG 9 AND INSTALLED AS PER SRM 51-30-02, JUST AT STA 980
- [SDR UPS07449310](https://openairdocs.org/sdr/UPS07449310.md): Web · cracked · Feb 16, 2007 · N683UP · Boeing 747121 · Fuselage Miscellaneous Structure
  > INSPECTION TYPE:C U/D RIGHT CREW DOOR SILL AREA I/B VERTICAL WEB AND ANGLE FOUND CRACKED. CRACK LENGTH.5 INCH. VERTICAL WEB AND ANGLE REPLACED PER SRM 51-10-01 PG 9 & INSTALLED AS PER SRM 51-30-02.
- [SDR UPS07449303](https://openairdocs.org/sdr/UPS07449303.md): Stringer · cracked · Feb 16, 2007 · N683UP · Boeing 747121 · Fuselage Main, Longeron/Stringer
  > INSPECTION TYPE:C M/D BS 380 S14EL FOUND CRACK. CRACK LENGTH.25 INCH. M/D BS 360-380 STRINGER S14EL REPLACED AS PER SRM 51-10-01 PG 9 AND INSTALLED AS PER SRM 51-30-02.
- [SDR UPS07449297](https://openairdocs.org/sdr/UPS07449297.md): Floor Support · corroded · Feb 16, 2007 · N683UP · Boeing 747121 · Fuselage Miscellaneous Structure
  > INSPECTION TYPE:C BULK CARGO COMPT LEFT STA 1940 LBL 55 FLOOR SUPPORT FOUND CORRODED CRACK AS MARKED. CORROSION BLEND OUT 0.025" X.5" X 1" EXCEED SRM 53-10-01 FIG 1 LIMITS. BULK CARGO COMPT FLOOR SUPPORT REPLACED WITH EXISTING SPLICE FROM BS 1920-1970 LBL 5
- [SDR UPS07449295](https://openairdocs.org/sdr/UPS07449295.md): Floor Support · corroded · Feb 16, 2007 · N683UP · Boeing 747121 · Fuselage Miscellaneous Structure
  > INSPECTION TYPE:C BULK CARGO COMPT LEFT STA 1920 TO STA 1940 LBL 55" FLOOR SUPPORT UNDER ANCHOR NUT FOUND CORRODED AS MARKED. CORROSION BLEND OUT 0.025" X.5" X 1" EXCEED SRM 53-10-01 FIG 1 LIMITS. BULK CARGO COMPT LEFT BS 1920 TO 1970 LBL 55" FLOOR SUPPORT
- [SDR UPS07449294](https://openairdocs.org/sdr/UPS07449294.md): Support · corroded · Feb 16, 2007 · N683UP · Boeing 747121 · Fuselage Miscellaneous Structure
  > INSPECTION TYPE:C BULK CARGO COMPT SLOPE PANEL SUPPORT SEVERAL LOCATION FOUND SURFACE CORROSION AT STA 1940 TO STA 2045 LBL 60 ANCHOR NUT AREA. CORROSION BLEND OUT 0.025" X.5" X 2" EXCEED SRM 53-10-01 FIG 1 LIMITS. SLOPE PNL SUPPORT BS 1940-2010 COR REMOVED
- [SDR UPS07449291](https://openairdocs.org/sdr/UPS07449291.md): Floorbeam · cracked · Feb 16, 2007 · N683UP · Boeing 747121 · Fuselage Main, Floor Beam
  > INSPECTION TYPE:C BULK CARGO COMPT M/D FLOORBEAM LOWER WEB FOUND CRACK AT 1940 RBL 64". CRACK LENGTH.5 INCH. BULK CARGO COMPT M/D FLOORBEAM LOWER WEB REPAIRED AS PER SRM 51-40-02 FIG 1, JUST AT STA 1940 RBL 64 AREA.
- [SDR UPS07449489](https://openairdocs.org/sdr/UPS07449489.md): Skin · corroded · Feb 15, 2007 · N683UP · Boeing 747121 · Wing, Center Box
  > INSPECTION TYPE:C M/D BS 1210-1220 LBL 97 WING CTR SECTION TOP SURFACE FOUND CORROSION. CORROSION BLEND OUT 0.043 X.5 X 2 INCHES EXCEED SRM LIMIT. M/D BS 1210-1220 LBL 97 WING CTR SECTION TOP SKIN REPAIRED AS PER RS R57-14-35765 AND UPS EO B747-5730-15819.
- [SDR UPS07449437](https://openairdocs.org/sdr/UPS07449437.md): Reveal · cracked · Feb 15, 2007 · N683UP · Boeing 747121 · Fuselage Miscellaneous Structure
  > INSPECTION TYPE:C RIGHT BS 2231 FRAME AREA 2EA FASTENER HOLE CRACK FOUND AT REVEAL BETWEEN S25R AND S26R. CRACK LENGTH.25 INCH,.125 INCH, AND.1875 INCH. M/D RIGHT BS 2231 FRAME REVEAL, STRAP AND CHORD REPAIRED AS PER RS R53-62-3764. CONTINUE INSPECTION I
- [SDR UPS07449403](https://openairdocs.org/sdr/UPS07449403.md): Attach Fitting · cracked · Feb 15, 2007 · N683UP · Boeing 747121 · Wing, Attach Fittings
  > INSPECTION TYPE:C RIGHT WING L/E RIB TO FRONT SPAR UPPER CHORD ATT FITTING AT ILES 340 FOUND CRACKED. CRACK LENGTH.375 INCH. RIGHT WING L/E RIB TO FRONT SPAR UPPER CHORD ATTACH AT ILES 340 REPLACED & INSTALLED AS PER SRM 51-10-01 PG 9 AND 51-30-02.

Next page: https://openairdocs.org/model/boeing-747-121/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 aircraft_model_key = '747121'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/model/boeing-747-121/reports

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