# Service difficulty reports: N755AS, cancelled Nov 19, 2014

A list on [N755AS, cancelled Nov 19, 2014](https://openairdocs.org/deregistered/N755AS-2014-11-19.md).

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

Page 1 of 7 · 302 reports

- [SDR ASAA2014040307431](https://openairdocs.org/sdr/ASAA2014040307431.md): Skin · cracked · Apr 3, 2014 · N755AS · Boeing 7374Q8 · Fuselage Main, Plate/Skin
  > R2 DOOR LOWER CUT OUT SKIN IS CRACKED. ACFT GROUNDED. REPAIRED SKIN IAW SRM 53-00-01-2R-32.
- [SDR ASAA2014031907252](https://openairdocs.org/sdr/ASAA2014031907252.md): Pin · out of adjust · Mar 19, 2014 · N755AS · Boeing 7374Q8 · Passenger/Crew Doors
  > FORWARD ENTRY DOOR IS INCREASINGLY HARDER TO CLOSE AND LATCH. ACFT GROUNDED. INSPECTED THE L1 DOOR, FOUND THE GUIDE PIN HITTING THE GUIDE, ADJUSTED PIN IAW AMM 52-11-00-705-007, LUBED THE GUIDE ARM ASSY, CHECKED PIN CLEARANCES AND FIT OF DOOR. DOOR OPS CHECK
- [SDR ASAA2013090895959](https://openairdocs.org/sdr/ASAA2013090895959.md): Skin · gouged · Sep 8, 2013 · N755AS · Boeing 7374Q8 · Fuselage Main, Plate/Skin
  > GOUGE IN FUSELAGE ON EDGE OF AFT CARGO DOOR CUTOUT, FWD EDGE, STRINGER 22R AREA. ACFT GROUNDED. REPAIRED SKIN AT AFT CARGO DOOR FWD CUTOUT IAW SRM 53-00-01-2R-32. THIS IS A CAT B REPAIR.
- [SDR ASAA2013090595927](https://openairdocs.org/sdr/ASAA2013090595927.md): Support Bracket · cracked · Sep 5, 2013 · N755AS · Boeing 7374Q8 · Fuselage Miscellaneous Structure
  > FWD CARGO BAY BS 500, SIDEWALL SUPPORT BRACKET CRACKED AT FASTENER HOLE BETWEEN STR 21L AND 22L, FOUND DURING CLEANING. REPAIRED SIDEWALL SUPPORT ANGLE IAW SRM 51-70-11-0G-0.
- [SDR ASAA2013082595961](https://openairdocs.org/sdr/ASAA2013082595961.md): Support · cracked · Aug 25, 2013 · N755AS · Boeing 7374Q8 · Service Doors
  > FORWARD SERVICE DOOR BS 294.5 S11R, EVIDENCE OF A CRACK IN RADIUS OF FRAME SUPPORT, ACFT GROUNDED. R & R FRAME SUPPORT IAW SRM 51-40-05-0G-0.
- [SDR ASAA2013080895758](https://openairdocs.org/sdr/ASAA2013080895758.md): Intercostal · cracked · Aug 8, 2013 · N755AS · Boeing 7374Q8 · Fuselage Miscellaneous Structure
  > INTERCOSTAL FWD OF R1 DOOR BS 277 TO 292 WL 253 OTBD ANGLE APPEARS TO BE CRACKED IN RADIUS. R & R ANGLE IAW SRM 51-40-02-0G-0.
- [SDR ASAA2013080895748](https://openairdocs.org/sdr/ASAA2013080895748.md): Intercostal · cracked · Aug 8, 2013 · N755AS · Boeing 7374Q8 · Fuselage Miscellaneous Structure
  > INTERCOSTAL FWD OF R1 DOOR BS 277 TO 292 WL 235 OTBD ANGLE APPEARS TO BE CRACKED IN RADIUS. R & R ANGLE IAW SRM 51-40-02-0G-0.
- [SDR ASAA2013080395799](https://openairdocs.org/sdr/ASAA2013080395799.md): Attach Bracket · corroded · Aug 3, 2013 · N755AS · Boeing 7374Q8 · Emergency Exits
  > RT FWD EMERGENCY EXIT DOOR HAS CORROSION AROUND FASTENER HOLES ON ARMREST ATTACH BRACKET. ACFT GROUNDED. R & R ARMREST ATTACH BRACKET IAW SRM 51-40-02.
- [SDR ASAA2013073007270](https://openairdocs.org/sdr/ASAA2013073007270.md): Cargo Track · corroded · Jul 30, 2013 · N755AS · Boeing 7374Q8 · Fuselage, Seat/Cargo Attach Fittings
  > AFT CARGO TRACK, RBL 13.8, STA 919-947 HAS AREAS OF CORRODED. ACFT GROUNDED. REMOVED CORROSION, FOUND TO BE OUT OF LIMITS IAW SRM 53-60-53-1A-1 DETAIL XIV, FABBED REPAIR PARTS IAW SRM 53-00-53-2R-2, INSTALLED REPAIR PARTS IAW SRM 53-00-53-2R 2, W.75", O.70
- [SDR ASAA2013072795797](https://openairdocs.org/sdr/ASAA2013072795797.md): Intercostal · cracked · Jul 27, 2013 · N755AS · Boeing 7374Q8 · Fuselage Miscellaneous Structure
  > INTERCOSTAL FWD OF R1 DOOR BS 277 TO 292, WL 240 OTBD ANGLE APPEARS TO BE CRACKED IN RADIUS. ACFT GROUNDED. R & R INTERCOSTAL IAW SRM 51-40-02-0G-0.
- [SDR ASAA2013072795749](https://openairdocs.org/sdr/ASAA2013072795749.md): Intercostal · cracked · Jul 27, 2013 · N755AS · Boeing 7374Q8 · Fuselage Miscellaneous Structure
  > INTERCOSTAL FWD OF R1 DOOR BS 277 TO 292 WL 258 OTBD ANGLE APPEARS TO BE CRACKED IN RADIUS. R & R ANGLE IAW SRM 51-40-02-0G-0.
- [SDR ASAA2013072695746](https://openairdocs.org/sdr/ASAA2013072695746.md): Frame · cracked · Jul 26, 2013 · N755AS · Boeing 7374Q8 · Fuselage Main, Frame
  > FRAME BS 500G RT SIDE HAS A CRACK APPROXIMATELY.1250 INCH LONG EXTENDING INBD FROM THE EDGE OF THE 1.04 WIRE PENETRATION HOLE. REPAIRED FRAME AIW SRM 53-00-07-2R-13.
- [SDR ASAA2013072695745](https://openairdocs.org/sdr/ASAA2013072695745.md): Frame · cracked · Jul 26, 2013 · N755AS · Boeing 7374Q8 · Fuselage Main, Frame
  > FRAME BS 500G HAS A CRACK APPROXIMATELY.1250 INCHES LONG EXTENDING INBD FROM THE EDGE OF THE 1.04, WORN PENETRATION HOLE. REPAIRED FRAME IAW SRM 53-00-07-2R-13.
- [SDR ASAA2013072595857](https://openairdocs.org/sdr/ASAA2013072595857.md): Frame · cracked · Jul 25, 2013 · N755AS · Boeing 7374Q8 · Fuselage Main, Frame
  > FRAME CRACKED AT BS 400 S8-9R. REPAIRED FRAME IAW T/C AD20062609 400 53 1755.
- [SDR ASAA2013072595801](https://openairdocs.org/sdr/ASAA2013072595801.md): Frame · cracked · Jul 25, 2013 · N755AS · Boeing 7374Q8 · Fuselage Main, Frame
  > BS 480, STR 8-9R FRAME IS CRACKED AT AC DUCT ATTACH POINT. ACFT GROUNDED. REPAIRED FRAME CRACKED IAW T/C AD20062609 400-53-1-755, FIG 3.
- [SDR ASAA2013071395800](https://openairdocs.org/sdr/ASAA2013071395800.md): Pan · cracked · Jul 13, 2013 · N755AS · Boeing 7374Q8 · Fuselage Miscellaneous Structure
  > FWD CARGO VHF ANTENNA PAN BS 500 TO 500A BL 0 IS CRACKED. ACFT GROUNDED. R & R VHF ANTENNA PAN IAW SRM 51-40-02-0G-0.
- [SDR ASAA2012122693556](https://openairdocs.org/sdr/ASAA2012122693556.md): Lens · missing · Dec 26, 2012 · N755AS · Boeing 7374Q8 · Emergency Lighting
  > EMERGENCY LIGHT, AISLE LIGHT AT ROW 7 LT, MISSING LENS. REPLACED LENS AND TESTED IAW MM 33-51-21-962-001. OPS NORMAL.
- [SDR ASAA2012121293456](https://openairdocs.org/sdr/ASAA2012121293456.md): Sign · missing · Dec 12, 2012 · N755AS · Boeing 7374Q8 · Emergency Lighting
  > RIGHT SIDE AFT OVERWING EXIT SIGN MISSING. REPLACED RT AFT OVERWING EXIT SIGN REF IPC 33-51-11-55A. OPS NORMAL REF MM 33-51-02.
- [SDR ASAA2012101393123](https://openairdocs.org/sdr/ASAA2012101393123.md): Control Cable · broken · Oct 13, 2012 · N755AS · Boeing 7374Q8 · Drag Control System
  > AT ROTATION, NOTICED SLIGHT LT YAW. DURING CLIMBOUT NOTICED SIGNIFICANT LT AILERON TO MAINTAIN WINGS LEVEL, APPROX 2.5 UNITS. AT CRUISE FL280 BETWEEN 3 TO 3.5 UNITS LT AILERON TRIM REQUIRED. FUEL BALANCED AND THRUST SYMMETRICAL. MAX MACH WAS.765. ATEMPTE
- [SDR ASAA1241432](https://openairdocs.org/sdr/ASAA1241432.md): Intercostal · cracked · Apr 9, 2012 · N755AS · Boeing 7374Q8 · Fuselage Miscellaneous Structure
  > INTERCOSTAL WEB, STR 11L, STA 294.5, 303.9 CRACKED AT INBD FWD CORNER FROM FASTENER TO EDGE. REPAIRED INTERCOSTAL WEB AT STA 294.5, STR 11L IAW ASA EA AD20091614-400-53-107.
- [SDR ASAA12411389](https://openairdocs.org/sdr/ASAA12411389.md): Skin · chafed · Apr 7, 2012 · N755AS · Boeing 7374Q8 · Leading Edge Devices
  > RT WING NR 4 SLAT T/E WEDGE INBD END LOWER SURFACE CHAFED. ACFT GROUNDED. REPARIED CHAFED AREA IAW SRM 51-70-10.
- [SDR ASAA12411273](https://openairdocs.org/sdr/ASAA12411273.md): A/C Pack · lack of lube · Mar 20, 2012 · N755AS · Boeing 7374Q8 · Passenger/Crew Doors
  > L1 DOOR VERY DIFFICULT TO CLOSE. FOUND HANDLE GUIDE PLATE DRY AND BINDING. LUBED GUIDE PLATE PER MM 12 25 21 643 007. OPS TEST GOOD FOR MM 52 11 00 705 065.
- [SDR ASAA11410820](https://openairdocs.org/sdr/ASAA11410820.md): Frame · cracked · Dec 8, 2011 · N755AS · Boeing 7374Q8 · Fuselage Main, Frame
  > RT SIDE FRAME 520 CRACKED AT A 1" PENETRATION HOLE. REPAIRED RT FRAME AT STA 520 IAW B737 400 SRM 53 00 07 REPAIR 13. THIS IS A CATEGORY B REPAIR WITH INSP THRESHOLD O 66 000 FLIGHT CYCLES AND 24 000 REPEAT INSP INTERVAL.
- [SDR ASAA11410819](https://openairdocs.org/sdr/ASAA11410819.md): Frame · cracked · Dec 8, 2011 · N755AS · Boeing 7374Q8 · Fuselage Main, Frame
  > LT SIDE FRAME AT 500D HAS CRACK IN 1" WIRE PENETRATION HOLE AND CRACK IN.5" HOLE. REPAIRED STA 500D LT FRAME IAW EA AD 20112305 400 53 100. THIS IS A CAT B REPAIR WITH INSP THRESHOLD OF 66 000 CYCLES AND REPEAT INSP AT 24 000 FLT CYCLES INTERVAL.
- [SDR ASAA11410818](https://openairdocs.org/sdr/ASAA11410818.md): Frame · cracked · Dec 8, 2011 · N755AS · Boeing 7374Q8 · Fuselage Main, Frame
  > RT FRAME 500B CRACKED AT.5" HOLE. REPAIRED STA 500B RT FRAME IAW EA AD 20112305 400 53 101 REV NEW ISSUED 12/16/2011. THIS IS A CAT B REPAIR WITH INSP THRESHOLD OF 66 000 FLIGHT CYCLES AND A REPEAT INSPECTION AT 24 000 FLT CYCLES.
- [SDR ASAA11410817](https://openairdocs.org/sdr/ASAA11410817.md): Frame · cracked · Dec 8, 2011 · N755AS · Boeing 7374Q8 · Fuselage Main, Frame
  > RT FRAME 500F HAS CRACK AT 1" WIDE PENETRATION HOLE. REPAIRED 500F RT FRAME IAW B737 400 SRM 53 00 07 REPAIR 13. THIS IS A CATEGORY B REPAIR WITH INSP THRESHOLD O 66 000 FLIGHT CYCLES AND 24 000 REPEAT INSP INTERVAL.
- [SDR ASAA11410816](https://openairdocs.org/sdr/ASAA11410816.md): Frame · cracked · Dec 8, 2011 · N755AS · Boeing 7374Q8 · Fuselage Main, Frame
  > LEFT SIDE FRAME 500B CRACK IN 1 INCH WIDE PENETRATION HOLE. REPAIRED 500B LT FRAME IAW B737 400 SRM 53 00 07 REPAIR 13. THIS IS A CATEGORY B REPAIR WITH INSP THRESHOLD O 66 000 FLIGHT CYCLES AND 24 000 REPEAT INSP INTERVAL.
- [SDR ASAA11410815](https://openairdocs.org/sdr/ASAA11410815.md): Frame · cracked · Dec 8, 2011 · N755AS · Boeing 7374Q8 · Fuselage Main, Frame
  > LEFT SIDE FRAME 500F HAS CRACK IN 1" WIDE PENETRATION HOLE. REPAIRED 500F LT FRAME IAW B737 400 SRM 53 00 07 REPAIR 13. THIS IS A CATEGORY B REPAIR INSPECTION THRESHOLD OF 66 000 CYCLES AND A REPEAT INSP AT 24 000 FLIGHT CYCLES.
- [SDR ASAA11410570](https://openairdocs.org/sdr/ASAA11410570.md): Battery Pack · discharged · Oct 25, 2011 · N755AS · Boeing 7374Q8 · Emergency Lighting
  > FORWARD EMERGENCY LIGHT BATTERY PACKS M1132 AND M1133 DO NOT HAVE SUFFICENT CHARGE FOR FUNCTIONAL. REPLACED BATTERY PACKS M1132 AND M1133 AND PERFORMED GOOD INSTALLATION TEST PER M/M 33 51 51 962 015 33 51 51 963 016.
- [SDR ASAA11410571](https://openairdocs.org/sdr/ASAA11410571.md): Skin · cracked · Oct 24, 2011 · N755AS · Boeing 7374Q8 · Fuselage Main, Plate/Skin
  > CRACK IN FUSELAGE LT SIDE AFT OF WING TO BODY FAIRING APPROX 4FT BELOW EMERGENCY LIGHT. REPAIRED LT SIDE SKIN AFT OF WING TO BODY FAIRING APPROX 4FT BELOW EMERGENCY LIGHT IAW SRM 53 00 01 REPAIR 31 PRODUCER V.
- [SDR ASAA11410468](https://openairdocs.org/sdr/ASAA11410468.md): Light · inoperative · Oct 3, 2011 · N755AS · Boeing 7374Q8 · Emergency Lighting
  > EMERGENCY LIGHT AISLE LIGHT AT ROW 12 RIGHT INOP. RELAMPED AND TESTED PER MM 33 51 81 962 044, OPS NORMAL.
- [SDR ASAA1140465](https://openairdocs.org/sdr/ASAA1140465.md): Light · inoperative · Oct 3, 2011 · N755AS · Boeing 7374Q8 · Emergency Lighting
  > EMERGENCY LIGHT EXIT LOCATOR SIGN AT L 1 DOOR HAS MULTIPLE LAMPS INOP. RELAMPED AND TESTED PER MM 33 51 81 962 011, OPS NORMAL.
- [SDR ASAA11410293](https://openairdocs.org/sdr/ASAA11410293.md): Bearing · failed · Aug 21, 2011 · N755AS · Boeing 7374Q8 · Service Doors
  > R1 DOOR STUCK CLOSED. FOUND TORQUE TUBE LOWER HINGE PIN BEARING FAILED. REMOVED & REPLACED LOWER BEARING PER 52 41 41.
- [SDR ASAA1149823](https://openairdocs.org/sdr/ASAA1149823.md): Lens · cracked · Jun 13, 2011 · N755AS · Boeing 7374Q8 · Emergency Lighting
  > EXIT SIGN OVER RIGHT OVERWING EXIT FELL OFF. REPLACED EMERGENCY EXIT LIGHT LENS COVER AT RIGHT FORWARD OVERWING EXIT.
- [SDR ASAA1149013](https://openairdocs.org/sdr/ASAA1149013.md): Bulkhead · corroded · Feb 14, 2011 · N755AS · Boeing 7374Q8 · Fuselage Main, Bulkhead
  > CORROSION ON BS 1016 BULKHEAD LOWER FORWARD CHORD FORWARD RADIUS AT RBL 2 AND WL 189. FABRICATED AND INSTALLED NEW SPLICE ANGLE IAW B737 400 SRM 53 80 08 FIG 101 51 40 05 51 20 01 AND 51 40 02.
- [SDR ASAA1149012](https://openairdocs.org/sdr/ASAA1149012.md): Stiffener · corroded · Feb 14, 2011 · N755AS · Boeing 7374Q8 · Fuselage Main, Bulkhead
  > CORROSION ON BS 1016 BULKHEAD BL 0 RIGHT CHANNEL STIFFENER ON VERTICAL LEG OUTBOARD FACE AT WL 191. REPAIRED STIFFENER IAW ASA EA 400 53EA 04756 REV A.
- [SDR ASAA1149011](https://openairdocs.org/sdr/ASAA1149011.md): Bulkhead · corroded · Feb 14, 2011 · N755AS · Boeing 7374Q8 · Fuselage Main, Bulkhead
  > CORROSION ON BS 1016 BULKHEAD WEB BL 0 ON BOTH SIDES OF CHANNEL STIFFENER FORWARD FACE WL 191. REMOVED CORRODED GORE WEB AND INSTALLED REPLACEMENT SECTION IAW ASA EA 400 53EA 04756 REV A.
- [SDR ASAA1148870](https://openairdocs.org/sdr/ASAA1148870.md): Stringer Clip · cracked · Jan 24, 2011 · N755AS · Boeing 7374Q8 · Fuselage Main, Attach Fittings
  > FRAME STRINGER TIE CLIP CRACKED BS 500C STR 11R. REMOVED AND REPLACED STRINGER TIE CLIP IAW B737 400 SRM 51 40 02 51 40 05 51 10 02 AND BOEING DRAWING 65 46536.
- [SDR ASAA1148838](https://openairdocs.org/sdr/ASAA1148838.md): Stringer Clip · cracked · Jan 21, 2011 · N755AS · Boeing 7374Q8 · Fuselage Main, Attach Fittings
  > STRINGER CLIP CRACKED AT BS 616 AT STR 5R. REMOVED AND REPLACED STRINGER CLIP IAW ASA DRAWING A53100265832.
- [SDR ASAA1148889](https://openairdocs.org/sdr/ASAA1148889.md): Fairing · cracked · Jan 20, 2011 · N755AS · Boeing 7374Q8 · Nacelle/Pylon, Plate/Skin
  > NR 2 PYLON INBOARD FAIRING ASSEMBLY IS CRACKED NAC STA 266. REMOVED AND REPLACED INBOARD FAIRING ASSEMBLY IAW BOEING DRAWING 313A1200 AND B737 400 SRM 51 40 05 51 40 02.
- [SDR ASAA1148888](https://openairdocs.org/sdr/ASAA1148888.md): Support Bracket · cracked · Jan 19, 2011 · N755AS · Boeing 7374Q8 · Wing Miscellaneous Structure
  > LEFT WING INBOARD UPPER NO STEP PANEL INBOARD SUPPORT BRACKET CRACKED. REMOVED AND REPLACED BRACKET IAW B737 400 SRM 51 40 02.
- [SDR ASAA1148841](https://openairdocs.org/sdr/ASAA1148841.md): Frame · cracked · Jan 19, 2011 · N755AS · Boeing 7374Q8 · Fuselage Main, Frame
  > BS 827 FRAME CRACKED AT INBOARD FASTENER FOR A/C RAIL ATTACH BRACKET. REPAIRED FRAME IAW ATS ER 11 01120
- [SDR ASAA1148851](https://openairdocs.org/sdr/ASAA1148851.md): Frame · cracked · Jan 19, 2011 · N755AS · Boeing 7374Q8 · Fuselage Main, Frame
  > FRAME CRACKED AT BS 787 STR 8R TO 9R. REPAIRED FRAME IAW ATS ER 11 01120.
- [SDR ASAA1148842](https://openairdocs.org/sdr/ASAA1148842.md): Frame · cracked · Jan 19, 2011 · N755AS · Boeing 7374Q8 · Fuselage Main, Frame
  > BS 747 FRAME CRACKED AT INBOARD FASTENER FOR A/C RAIL ATTACH BRACKET. REPAIRED FRAME IAW ATS ER 11 01120.
- [SDR ASAA1148850](https://openairdocs.org/sdr/ASAA1148850.md): Frame · cracked · Jan 19, 2011 · N755AS · Boeing 7374Q8 · Fuselage Main, Frame
  > FRAME CRACKED AT BS 747 STR 8-9L AT BIN RAIL. REPAIRED FRAME IAW AD20062609-400-53-111.
- [SDR ASAA1148849](https://openairdocs.org/sdr/ASAA1148849.md): Stringer Splice · cracked · Jan 19, 2011 · N755AS · Boeing 7374Q8 · Fuselage Main, Longeron/Stringer
  > BS 360 STR 16L STRINGER SPLICE CHANNEL IS CRACKED. REPAIRED CHANNELS IAW AD20091614-400-53-102 AND ER 11-01119.
- [SDR ASAA1148848](https://openairdocs.org/sdr/ASAA1148848.md): Frame · cracked · Jan 19, 2011 · N755AS · Boeing 7374Q8 · Fuselage Main, Frame
  > FRAME CRACKED AT BS 907 STR 8L TO 9L AT BIN RAIL. REPAIRED FRAME IAW AD20062609-400-53-111.
- [SDR ASAA1148847](https://openairdocs.org/sdr/ASAA1148847.md): Frame · cracked · Jan 19, 2011 · N755AS · Boeing 7374Q8 · Fuselage Main, Frame
  > BS 300 FRAME CRACKED AT A/C RAIL ATTACH BRACKET. REPAIRED FRAME IAW AD20062609-400-53-115 AND ER 11-01257.
- [SDR ASAA1148846](https://openairdocs.org/sdr/ASAA1148846.md): Frame · cracked · Jan 19, 2011 · N755AS · Boeing 7374Q8 · Fuselage Main, Frame
  > FRAME CRACKED AT BS 867 STR 8-9L AT BIN RAIL. REPAIRED FRAME IAW AD20062609-400-53-111.
- [SDR ASAA1148845](https://openairdocs.org/sdr/ASAA1148845.md): Frame · cracked · Jan 19, 2011 · N755AS · Boeing 7374Q8 · Fuselage Main, Frame
  > BS 727F FRAME CRACKED AT INBOARD FASTENER HOLE FOR A/C ATTACH BRACKET. REPAIRED FRAME IAW AD20062609-400-53-111.

Next page: https://openairdocs.org/deregistered/N755AS-2014-11-19/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 n_number = 'N755AS' AND deregistration_id = 'N755AS-2014-11-19'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/deregistered/N755AS-2014-11-19/reports

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.