# Service difficulty reports: N257CA, cancelled Jul 11, 2013 A list on [N257CA, cancelled Jul 11, 2013](https://openairdocs.org/deregistered/N257CA-2013-07-11.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 3 · 105 reports - [SDR COMA0110023](https://openairdocs.org/sdr/COMA0110023.md): Skin · dented · Jan 18, 2001 · N257CA · Emb EMB120RT · Cargo/Baggage Doors > THE AIRCRAFT CARGO DOOR SKIN IS PULLED OUT AT FORWARD UPPER CORNER AREA. THE CARGO SKIN WAS REPAIRED BY ADDING A DOUBLER IN ACCORDANCE WITH AERODESIGN REPORT 3872-1, REV IR DATED 1-18-01. - [SDR COMA0110007](https://openairdocs.org/sdr/COMA0110007.md): Controller · malfunctioned · Jan 9, 2001 · N257CA · Emb EMB120RT · Cabin Pressure Controller > AIRCRAFT WILL NOT PRESSURIZE. REPLACED THE PRESSURIZATION HAND CONTROLLER. - [SDR COMA0110005](https://openairdocs.org/sdr/COMA0110005.md): Outflow Valve · malfunctioned · Jan 7, 2001 · N257CA · Emb EMB120RT · Pressure Regulator/Outflow Valve > AIRCRAFT WOULD NOT PRESSURIZE. REPLACED THE OUTFLOW VALVE. - [SDR COMA0010407](https://openairdocs.org/sdr/COMA0010407.md): Battery · discharged · Dec 3, 2000 · N257CA · Emb EMB120RT · Emergency Lighting > FORWARD SECTION OF EMREGENCY FLOOR LIGHTING IS INOPERABLE. REPLACED EMERGENCY BATTERY. - [SDR COMA0010301](https://openairdocs.org/sdr/COMA0010301.md): Battery · discharged · Jul 13, 2000 · N257CA · Emb EMB120RT · Emergency Lighting > EMERGENCY LIGHTS ARE INOPERABLE. REPLACED EMERGENCY BATTERY. - [SDR COMA0010206](https://openairdocs.org/sdr/COMA0010206.md): Switch · out of adj · Jun 25, 2000 · N257CA · Emb EMB120RT · Propeller Feathering/Reversing > AUTO FEATHER WARNING DURING TAKEOFF. ADJUSTED THE RIGHT HAND POWER LEVER ARMING MICROSWITCH. - [SDR COMA0010205](https://openairdocs.org/sdr/COMA0010205.md): Signal Cond Unit · malfunctioned · Jun 23, 2000 · N257CA · Emb EMB120RT · Propeller Feathering/Reversing > AUTO FEATHER WARNING DURING TAKEOFF. REPLACED THE LEFT ENGINE TORQUE SIGNAL CONDITIONER. - [SDR COMA0010204](https://openairdocs.org/sdr/COMA0010204.md): Switch · malfunctioned · Jun 21, 2000 · N257CA · Emb EMB120RT · Propeller Feathering/Reversing > AUTO FEATHER CONFIG WARNING DURING TAKEOFF. REPLACED SWITCHES SO 299 AND SO 300 IN POWER LEVER QUADRANT. - [SDR COMA0010203](https://openairdocs.org/sdr/COMA0010203.md): Sensor · out of adj · Jun 19, 2000 · N257CA · Emb EMB120RT · Elevator Tab Control System > TAKEOFF TRIM CONFIG WARNING. ADJUSTED THE LEFT HAND ELEVATOR TRIM PROXIMITY SENSOR. - [SDR COMA011008](https://openairdocs.org/sdr/COMA011008.md): Crossbeam · corroded · May 31, 2000 · N257CA · Emb EMB120RT · Fuselage Main, Structure > UPON COMPLIANCE OF 2C INSPECTION TASK 5310-121/122-011 THE FRAME 12 CROSS BEAM WAS FOUND TO BE CORRODED. THE DAMAGED PART WAS REPLACED IAW EMB-120 STRUCTURAL REPAIR MANUAL STANDARD PRACTICES. - [SDR COMA0010159](https://openairdocs.org/sdr/COMA0010159.md): Clip · cracked · May 31, 2000 · N257CA · Emb EMB120RT · Wing Main, Frame Structure > UPON COMPLIANCE OF 2C INSPECTION TASK 5720-522-0II, THE RIB NR 5 SKIN CLIP WAS FOUND TO BE CRACKED. THE DAMAGED PART WAS REPLACED IAW EMB-120 STRUCTURAL REPAIR MANUAL STANDARD PRACTICES. - [SDR COMA0010158](https://openairdocs.org/sdr/COMA0010158.md): Frame · corroded · May 31, 2000 · N257CA · Emb EMB120RT · Fuselage Main, Frame > UPON COMPLIANCE OF 2C INSPECTION TASK 161/162-01Z, THE FRAME 43 CHANNEL WAS FOUND TO BE CORRODED. THE DAMAGED PART WAS REPAIRED IAW EMB-120 STRUCTURAL REPAIR MANUAL STANDARD PRACTICES AND AERODESIGN REPORT 3674-2. - [SDR COMA0010157](https://openairdocs.org/sdr/COMA0010157.md): Angle · cracked · May 31, 2000 · N257CA · Emb EMB120RT · Wing Miscellaneous Structure > UPON COMPLIANCE OF 2C INSPECTION TASK 5320-243/244-02I, THE WING TO FUSE FAIRING LOWER ATTACH ANGLES WAS FOUND TO BE CRACKED. THE DAMAGED PART WAS REPLACED IAW EMB-120 STRUCTURAL REPAIR MANUAL STANDARD PRACTICES AND AERODESIGN REPORT 1226-9. - [SDR COMA0010156](https://openairdocs.org/sdr/COMA0010156.md): Beam · cracked · May 31, 2000 · N257CA · Emb EMB120RT · Fuselage Miscellaneous Structure > UPON COMPLIANCE OF 2C INSPECTION TASK 131/132-01Z, THE CENTER OMEGA BEAM WAS FOUND TO BE CRACKED IN TWO PLACES AND CORRODED IN ANOTHER. THE DAMAGED PART WAS REPAIRED IAW EMB-120 STRUCTURAL REPAIR MANUAL STANDARD PRACTICES AND AERODESIGN REPORT 1716-5. - [SDR COMA0010155](https://openairdocs.org/sdr/COMA0010155.md): Channel · cracked · May 31, 2000 · N257CA · Emb EMB120RT · Passenger/Crew Doors > UPON COMPLIANCE OF 2C INSPECTION TASK 811-02Z, DOOR CHANNEL WAS FOUND TO BE CRACKED. THE DAMAGED PART WAS REPLACED IAW EMB-120 STRUCTURAL REPAIR MANUAL STANDARD PRACTICES. - [SDR COMA0010154](https://openairdocs.org/sdr/COMA0010154.md): Shear Tie · cracked · May 31, 2000 · N257CA · Emb EMB120RT · Fuselage Main, Structure > UPON COMPLIANCE OF 2C INSPECTION TASK 5310-221/222-15I, THE FRAME 9 LEFT AND RIGHT SKIN SUPPORTS WAS FOUND TO BE CRACKED. THE DAMAGED PART WAS REPLACED IAW EMB-120 STRUCTURAL REPAIR MANUAL STANDARD PRACTICES AND AERODESIGN REPORT 660-1. - [SDR COMA0010153](https://openairdocs.org/sdr/COMA0010153.md): Frame · corroded · May 31, 2000 · N257CA · Emb EMB120RT · Fuselage Main, Frame > UPON COMPLIANCE OF 2C INSPECTION TASK 141/142-01Z, THE FRAME 22 CHANNEL WAS FOUND TO BE CORRODED. THE DAMAGED PART WAS REPAIRED IAW EMB-120 STRUCTURAL REPAIR MANUAL STANDARD PRACTICES AND AERODESIGN REPORT 3674-1. - [SDR COMA0010152](https://openairdocs.org/sdr/COMA0010152.md): Floorbeam · corroded · May 31, 2000 · N257CA · Emb EMB120RT · Fuselage Main, Floor Beam > UPON COMPLIANCE OF 2C INSPECTION TASK 151/152-01Z, THE RT FLOOR CROSSBEAM FRAME 33 WAS FOUND TO BE CORRODED. THE DAMAGED PART WAS REPLACED IAW EMB-120 STRUCTURAL REPAIR MANUAL STANDARD PRACTICES. - [SDR COMA0010151](https://openairdocs.org/sdr/COMA0010151.md): Threshold · corroded · May 31, 2000 · N257CA · Emb EMB120RT · Fuselage Miscellaneous Structure > UPON COMPLIANCE OF 2C INSPECTION TASK 161/162-01Z, THE CARGO AFT RIGHT HAND SILL WAS FOUND TO BE CORRODED. THE DAMAGED PART WAS REPLACED IAW EMB-120 STRUCTURAL REPAIR MANUAL STANDARD PRACTICES AND AERODESIGN REPORT 3661-1. - [SDR COMA0010150](https://openairdocs.org/sdr/COMA0010150.md): Threshold · corroded · May 31, 2000 · N257CA · Emb EMB120RT · Fuselage Miscellaneous Structure > UPON COMPLIANCE OF 2C INSPECTION TASK 161/162-01Z, THE CARGO FORWARD RIGHT HAND SILL WAS FOUND TO BE CORRODED. THE DAMAGED PART WAS REPLACED IAW EMB-120 STRUCTURAL REPAIR MANUAL STANDARD PRACTICES AND AERODESIGN REPORT 3661-2. - [SDR COMA0010149](https://openairdocs.org/sdr/COMA0010149.md): Floorbeam · corroded · May 31, 2000 · N257CA · Emb EMB120RT · Fuselage Main, Floor Beam > UPON COMPLIANCE OF 2C INSPECTION TASK 131/132-01Z, THE RIGHT HAND FLOOR CROSSBEAM AT FRAME 19 WAS FOUND TO BE CORRODED. THE DAMAGED PART WAS REPLACED IAW EMB-120 STRUCTURAL REPAIR MANUAL STANDARD PRACTICES. - [SDR COMA0010148](https://openairdocs.org/sdr/COMA0010148.md): Floorbeam · corroded · May 31, 2000 · N257CA · Emb EMB120RT · Fuselage Main, Floor Beam > UPON COMPLIANCE OF 2C INSPECTION TASK 131/132-01Z, THE FRAME 16 FLOOR T SECTION WAS FOUND TO BE CORRODED. THE DAMAGED PART WAS REPLACED IAW EMB-120 STRUCTURAL REPAIR MANUAL STANDARD PRACTICES. - [SDR COMA0010147](https://openairdocs.org/sdr/COMA0010147.md): Support Bracket · corroded · May 31, 2000 · N257CA · Emb EMB120RT · Fuselage Miscellaneous Structure > UPON COMPLIANCE OF 2C INSPECTION TASK 231/232-01Z, THE RIGHT HAND FORWARD SIDEWALL SEAT TRACK SUPPORT WAS FOUND TO BE CORRODED. THE DAMAGED PART WAS REPLACED IAW EMB-120 STRUCTURAL REPAIR MANUAL STANDARD PRACTICES. - [SDR COMA0010146](https://openairdocs.org/sdr/COMA0010146.md): Threshold · corroded · May 31, 2000 · N257CA · Emb EMB120RT · Fuselage Miscellaneous Structure > UPON COMPLIANCE OF 2C INSPECTION TASK 131/132-01Z, THE RIGHT HAND NR 1 SILL WAS FOUND TO BE CORRODED. THE DAMAGED PART WAS REPLACED IAW EMB-120 STRUCTURAL REPAIR MANUAL STANDARD PRACTICES. - [SDR COMA0010145](https://openairdocs.org/sdr/COMA0010145.md): Strap · corroded · May 31, 2000 · N257CA · Emb EMB120RT · Fuselage Main, Floor Beam > UPON COMPLIANCE OF 2C INSPECTION TASK 131/132-01Z, THE RIGHT HAND NR 1 BUTT STRAP WAS FOUND TO BE CORRODED. THE DAMAGED PART WAS REPLACED IAW EMB-120 STRUCTURAL REPAIR MANUAL STANDARD PRACTICES. - [SDR COMA0010144](https://openairdocs.org/sdr/COMA0010144.md): Floorbeam · corroded · May 31, 2000 · N257CA · Emb EMB120RT · Fuselage Main, Floor Beam > UPON COMPLIANCE OF 2C INSPECTION TASK 141/142-01Z, THE LEFT HAND FLOOR CROSSBEAM AT FRAME 23 WAS FOUND TO BE CORRODED. THE DAMAGED PART WAS REPLACED IAW EMB-120 STRUCTURAL REPAIR MANUAL STANDARD PRACTICES. - [SDR COMA0010143](https://openairdocs.org/sdr/COMA0010143.md): Floor Support · corroded · May 31, 2000 · N257CA · Emb EMB120RT · Fuselage Miscellaneous Structure > UPON COMPLIANCE OF 2C INSPECTION TASK 131/132-01Z, THE LEFT HAND FLOOR SUPPORT T-SECTION AT FRAME 16 WAS FOUND TO BE CORRODED. THE DAMAGED PART WAS REPLACED IAW EMB-120 STRUCTURAL REPAIR MANUAL STANDARD PRACTICES. - [SDR COMA0010142](https://openairdocs.org/sdr/COMA0010142.md): Support Bracket · corroded · May 31, 2000 · N257CA · Emb EMB120RT · Fuselage Miscellaneous Structure > UPON COMPLIANCE OF 2C INSPECTION TASK 231/232-01Z, THE LEFT HAND NR 1 SIDEWALL SEAT TRACK SUPPORT WAS FOUND TO BE CORRODED. THE DAMAGED PART WAS REPLACED IAW EMB-120 STRUCTURAL REPAIR MANUAL STANDARD PRACTICES. - [SDR COMA0010141](https://openairdocs.org/sdr/COMA0010141.md): Strap · corroded · May 31, 2000 · N257CA · Emb EMB120RT · Fuselage Miscellaneous Structure > UPON COMPLIANCE OF 2C INSPECTION TASK 151/152-01Z, THE LEFT HAND NR 6 BUTT STRAP WAS FOUND TO BE CORRODED. THE DAMAGED PART WAS REPLACED IAW EMB-120 STRUCTURAL REPAIR MANUAL STANDARD PRACTICES. - [SDR COMA0010140](https://openairdocs.org/sdr/COMA0010140.md): Strap · corroded · May 31, 2000 · N257CA · Emb EMB120RT · Fuselage Miscellaneous Structure > UPON COMPLIANCE OF 2C INSPECTION TASK 151/152-01Z, THE LEFT HAND NR 4 BUTT STRAP WAS FOUND TO BE CORRODED. THE DAMAGED PART WAS REPLACED IAW EMB-120 STRUCTURAL REPAIR MANUAL STANDARD PRACTICES. - [SDR COMA0010139](https://openairdocs.org/sdr/COMA0010139.md): Strap · corroded · May 31, 2000 · N257CA · Emb EMB120RT · Fuselage Main, Floor Beam > UPON COMPLIANCE OF 2C INSPECTION TASK 141/142-01Z, THE LEFT HAND NR 2 BUTT STRAP WAS FOUND TO BE CORROCED. THE DAMAGED PART WAS REPLACED IAW EMB-120 STRUCTURAL REPAIR MANUAL STANDARD PRACTICES. - [SDR COMA0010138](https://openairdocs.org/sdr/COMA0010138.md): Strap · corroded · May 31, 2000 · N257CA · Emb EMB120RT · Fuselage Miscellaneous Structure > UPON COMPLIANCE OF 2C INSPECTION TASK 131/132-01Z, THE LEFT HAND NR 1 BUTTSTRAP WAS FOUND TO BE CORRODED. THE DAMAGED PART WAS REPLACED IAW EMB-120 STRUCTURAL REPAIR MANUAL STANDARD PRACTICES. - [SDR COMA0010137](https://openairdocs.org/sdr/COMA0010137.md): Strap · corroded · May 31, 2000 · N257CA · Emb EMB120RT · Fuselage Miscellaneous Structure > UPON COMPLIANCE OF 2C INSPECTION TASK 131/132-01Z, THE CENTER NR 1 BUTTSTRAP WAS FOUND TO BE CORRODED. THE DAMAGED PART WAS REPLACED IAW EMB-12O STRUCTURAL REPAIR MANUALSTANDARD PRACTICES. - [SDR COMA0010136](https://openairdocs.org/sdr/COMA0010136.md): Plate · corroded · May 31, 2000 · N257CA · Emb EMB120RT · Fuselage Miscellaneous Structure > UPON COMPLIANCE OF 2C INSPECTION TASK 131/132-01Z, THE LT FWD BUTT PLATE WAS FOUND TO BE CORRODED. THE DAMAGED PART WAS REPLACED IAW EMB-120 STRUCTURAL REPAIR MANUAL STANDARD PRACTICES AND AERODESIGN REPORT 1671-2. - [SDR COMA0010135](https://openairdocs.org/sdr/COMA0010135.md): Plate · corroded · May 31, 2000 · N257CA · Emb EMB120RT · Fuselage Miscellaneous Structure > UPON COMPLIANCE OF 2C INSPECTION TASK 131/132-01Z, THE CENTER FWD BUTT PLATE WAS FOUND TO BE CORRODED. THE DAMAGED PART WAS REPLACED IAW EMB-120 STRUCTURAL REPAIR MANUAL STANDARD PRACTICES AND AERODESIGN REPORT 1671-1. - [SDR COMA0010134](https://openairdocs.org/sdr/COMA0010134.md): Shear Tie · cracked · May 31, 2000 · N257CA · Emb EMB120RT · Fuselage Main, Structure > UPON COMPLIANCE OF 2C INSPECTION TASK 5310-121/122-O1I, THE FRAME 12 SKIN SUPPORT WAS FOUND TO BE CRACKED. THE DAMAGED PART WAS REPLACED IAW EMB-120 STRUCTURAL REPAIR MANUAL STANDARD PRACTICES AND AERODESIGN REPORT 3653-1. - [SDR COMA0010133](https://openairdocs.org/sdr/COMA0010133.md): Channel · corroded · May 31, 2000 · N257CA · Emb EMB120RT · Fuselage Main, Structure > UPON COMPLICANCE OF 2C INSPECTION TASK 5310-121/122-01I, THE FRAME 12 Z SECTION WAS FOUND TO BE CORRODED. THE DAMAGED PART WAS REPLACED IAW EMB-120 STRUCTURAL REPAIR MANUAL STANDARD PRACTICES. - [SDR COMA0010132](https://openairdocs.org/sdr/COMA0010132.md): Shear Tie · cracked · May 31, 2000 · N257CA · Emb EMB120RT · Fuselage Main, Structure > UPON COMPLIANCE OF 2C INSPECTION TASK 261/262-01Z, THE FRAME 40 SKIN SUPPORT WAS FOUND TO BE CRACKED. THE DAMAGED PART WAS REPLACED IAW EMB-120 STRUCTURAL REPAIR MANUAL STANDARD PRACTICES. - [SDR COMA0010130](https://openairdocs.org/sdr/COMA0010130.md): Floorbeam · cracked · May 31, 2000 · N257CA · Emb EMB120RT · Fuselage Main, Floor Beam > UPON COMPLIANCE OF 2C INSPECTION TASK 5310-121/122-01I, THE LEFT AND RIGHT FLOOR PROP ANGLES WAS FOUND TO BE CRACKED. THE DAMAGED PART WAS REPAIRED IAW EMB-120 STRUCTURAL REPAIR MANUAL STANDARD PRACTICES AND AERODESIGN REPORT 3647-1. - [SDR COMA0010129](https://openairdocs.org/sdr/COMA0010129.md): Receptacle · corroded · May 31, 2000 · N257CA · Emb EMB120RT · Fuselage Miscellaneous Structure > UPON COMPLIANCE OF 2C INSPECTION TASK 152-01Z, THE ROW 8 P/N RECEPTACLES WAS FOUND TO BE CORRODED. THE DAMAGED PART WAS REPLACED IAW EMB-120 STRUCTURAL REPAIR MANUALSTANDARD PRACTICES. - [SDR COMA0010128](https://openairdocs.org/sdr/COMA0010128.md): Seat Track · corroded · May 31, 2000 · N257CA · Emb EMB120RT · Fuselage, Seat/Cargo Attach Fittings > UPON COMPLIANCE OF 2C INSPECTION THE FOLLOWING P/N SEAT TRACKS WERE FOUND WITH CORROSION AND REPLACED WITH FACTORY REPLACEMENT PARTS: 120-26865-005, 120-15997-603, 120-26864-005, 120-15994-003, 120-47507-001, 120-16000-603, 120-15996-005, 120-15995-007, 12 - [SDR COMA0010127](https://openairdocs.org/sdr/COMA0010127.md): Angle · corroded · May 31, 2000 · N257CA · Emb EMB120RT · Fuselage Miscellaneous Structure > UPON COMPLIANCE OF 2C INSPECTION TASK 152-01Z, THE ROW 8 EXIT ANGLE WAS FOUND TO BE CORRODED. THE DAMAGED PART WAS REPLACED IAW EMB-120 STRUCTURAL REPAIR MANUAL STANDARD PRACTICES. - [SDR COMA0010061](https://openairdocs.org/sdr/COMA0010061.md): Placard · missing · Apr 30, 2000 · N257CA · Emb EMB120RT · Placards and Markings > EMERGENCY EXIT PLACARD MISSING. REPLACED PLACARD. - [SDR COMA0010040](https://openairdocs.org/sdr/COMA0010040.md): Switch · out of adj · Mar 22, 2000 · N257CA · Emb EMB120RT · Door Warning System > CARGO DOOR WARNING AFTER TAKEOFF. ADJUSTED DOOR WARNING MICRO SWITCH. - [SDR COMA0010043](https://openairdocs.org/sdr/COMA0010043.md): Bracket · loose · Mar 22, 2000 · N257CA · Emb EMB120RT · Door Warning System > CARGO DOOR WARNING AFTER TAKEOFF. SECURED LOOSE BRACKET AT CARGO DOOR WARNING MICRO SWITCH. - [SDR COMA9910173](https://openairdocs.org/sdr/COMA9910173.md): Warning · activated · Nov 16, 1999 · N257CA · Emb EMB120RT · Door Warning System > CARGO DOOR WARNING DURING TAKEOFF. DEFERRED DOOR WARNING, AIRCRAFT CONTINUED SERVICE. - [SDR COMA9910069](https://openairdocs.org/sdr/COMA9910069.md): Sensor · malfunctioned · May 2, 1999 · N257CA · Emb EMB120RT · Landing Gear Position and Warning > WHEN LANDING GEAR SELECTED UP, THE NLG INTRANSIT LIGHT REMAINED ON. REPLACED THE NLG UPLOCK PROXIMITY SENSOR. - [SDR COMA9910064](https://openairdocs.org/sdr/COMA9910064.md): Fuel Line · leaking · Apr 20, 1999 · N257CA · Emb EMB120RT · Engine Fuel Distribution > FUEL LEAK LEFT ENGINE. REPLACED LEAKING FUEL LINE AT LEFT HAND ENGINE FUEL CONTROL UNIT. - [SDR COMA9910046](https://openairdocs.org/sdr/COMA9910046.md): Skin · cracked · Mar 26, 1999 · N257CA · Emb EMB120RT · Fuselage Main, Plate/Skin > DURING 2,000 FLIGHT CYCLE CHECK, FOUND CRACK EXTENDING FROM RIVET HOLE FORWARD ON RIGHT SIDE BETWEEN RIGHT DV WINDOW AND RJ WINDSHIELD (POST SKIN). REPAIRED DAMAGED AREA IAW EMB FAX EST 474/95 DATED 01 NOVEMBER 95. - [SDR COMA9910045](https://openairdocs.org/sdr/COMA9910045.md): Sign · broken · Mar 19, 1999 · N257CA · Emb EMB120RT · Emergency Lighting > EMERGENCY EXIT SIGN AT ROW 8 IS BROKEN. REPLACED EXIT SIGN. Next page: https://openairdocs.org/deregistered/N257CA-2013-07-11/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 = 'N257CA' AND deregistration_id = 'N257CA-2013-07-11' ORDER BY difficulty_date DESC ``` This list as a web page: https://openairdocs.org/deregistered/N257CA-2013-07-11/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.