# N783MM: 2016 Embraer ERJ 190-100 ECJ

- Status: Valid registration
- Airframe: [Embraer ERJ 190-100 ECJ](https://openairdocs.org/model/embraer-erj-190-100-ecj) (registry code 3260413, 21 seats)
- Engine: [GE CF34-10E7 series](https://openairdocs.org/engine/ge-cf34-10e7-series) (registry code 30164)
- Data sheets: [TCDS A57NM](https://openairdocs.org/tcds/A57NM) (Embraer S.A.), [TCDS E00070EN](https://openairdocs.org/tcds/E00070EN) (General Electric Company GE Aviation) (OpenAirDocs)
- Serial number: 19000705
- Year built: 2016
- Type: Fixed wing multi engine
- Engine type: Turbo-fan
- Airworthiness: Standard, transport
- Airworthiness date: December 1, 2016
- Certificate issued: November 30, 2016
- Expires: November 30, 2029
- Mode S code: AA9CCA
- Registered owner: [Mandalay Resort Group LLC](https://openairdocs.org/faa-owner/MANDALAY%20RESORT%20GROUP%20LLC)
- Location: [Las Vegas, NV](https://openairdocs.org/faa-place/NV/Las%20Vegas)
- Owner type: Corporation
- Owner's area on the map: 36.0778° N, 115.2130° W: Placed by OpenAirDocs at the center of ZIP code 89118, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=783MM
- Page: https://openairdocs.org/aircraft/N783MM

From the FAA registry file of October 24, 2026. ADs below are matched by the registry's airframe and engine model codes. They may apply; each AD's applicability can narrow it by serial number, part number or installed equipment. This is not a compliance determination. The registry lists only the engine series, so ADs for every GE CF34-10E7 model are included.

## ADs that may apply (OpenAirDocs): 41 in force

### Matched by airframe (Embraer ERJ 190-100 ECJ)

- [AD 2026-13-02](https://openairdocs.org/ad/2026-13-02): Navigation · Airbus Canada Limited Partnership 18, 49-46, 80-A and 555 more. Effective Jul 1, 2026
- [AD 2026-10-01](https://openairdocs.org/ad/2026-10-01): Pneumatic · Embraer ERJ 190-100 ECJ. Effective Jun 26, 2026
- [AD 2025-14-05](https://openairdocs.org/ad/2025-14-05): Nacelles/Pylons · Embraer ERJ 170-100 LR, ERJ 170-100 STD, ERJ 170-100 SE and 12 more. Effective Aug 25, 2025
- [AD 2024-17-03](https://openairdocs.org/ad/2024-17-03): Time Limits/Maintenance Checks · Embraer ERJ 190-100 STD, ERJ 190-100 LR, ERJ 190-100 ECJ and 4 more. Effective Nov 4, 2024
- [AD 2023-10-02](https://openairdocs.org/ad/2023-10-02): Indicating/Recording System, Navigation · Boeing 18, 23, 35 and 1,060 more. Effective May 26, 2023
- [AD 2022-27-06](https://openairdocs.org/ad/2022-27-06): Instruments · Embraer ERJ 190-100 STD, ERJ 190-100 LR, ERJ 190-100 ECJ and 4 more. Effective Feb 16, 2023
- [AD 2022-12-11](https://openairdocs.org/ad/2022-12-11): Time Limits/Maintenance Checks, Landing Gear · Embraer ERJ 190-100 ECJ. Effective Aug 31, 2022
- [AD 2022-16-01](https://openairdocs.org/ad/2022-16-01): Windows · Embraer ERJ 170-100 LR, ERJ 170-100 SE, ERJ 170-100 STD and 12 more. Effective Aug 15, 2022
- [AD 2021-25-02](https://openairdocs.org/ad/2021-25-02): Nacelles/pylons · Yaborã Indústria Aeronáutica ERJ 190-100 STD, ERJ 190-100 LR, ERJ 190-100 ECJ and 4 more. Effective Jan 20, 2022
- [AD 2020-25-08](https://openairdocs.org/ad/2020-25-08): Flight controls · Yaborã Indústria Aeronáutica ERJ 170-100 LR, ERJ 170-100 SE, ERJ 170-100 STD and 12 more. Effective Jan 21, 2021
- [AD 2020-07-21](https://openairdocs.org/ad/2020-07-21): Landing gear · Yaborã Indústria Aeronáutica ERJ 170-100 LR, ERJ 170-100 SE, ERJ 170-100 STD and 12 more. Effective May 26, 2020
- [AD 2020-05-21](https://openairdocs.org/ad/2020-05-21): Indicating/recording systems · Yaborã Indústria Aeronáutica ERJ 190-100 ECJ, ERJ 190-100 IGW, ERJ 190-100 LR and 4 more. Effective Apr 24, 2020
- [AD 2019-19-03](https://openairdocs.org/ad/2019-19-03): Fuselage · Embraer ERJ 170-100 LR, ERJ 170-100 SE, ERJ 170-100 STD and 12 more. Effective Oct 31, 2019
- [AD 2013-25-04](https://openairdocs.org/ad/2013-25-04): Equipment/Furnishings · Embraer ERJ 170-100 LR, ERJ 170-100 SE, ERJ 170-100 STD and 11 more. Effective Feb 10, 2014
- [AD 2013-16-22](https://openairdocs.org/ad/2013-16-22): Fuselage · Embraer ERJ 170-100 LR, ERJ 170-100 SE, ERJ 170-100 STD and 11 more. Effective Sep 27, 2013
- [AD 2013-11-17](https://openairdocs.org/ad/2013-11-17): Pneumatic · Embraer ERJ 170-100 LR, ERJ 170-100 SE, ERJ 170-100 STD and 11 more. Effective Aug 6, 2013
- [AD 2013-11-07](https://openairdocs.org/ad/2013-11-07): Landing gear · Embraer ERJ 190-100 ECJ, ERJ 190-100 IGW, ERJ 190-100 LR and 4 more. Effective Jul 9, 2013
- [AD 2013-05-12](https://openairdocs.org/ad/2013-05-12): Fire Protection · Embraer ERJ 170-100 LR, ERJ 170-100 SE, ERJ 170-100 STD and 11 more. Effective May 3, 2013
- [AD 2013-03-13](https://openairdocs.org/ad/2013-03-13): Doors · Embraer ERJ 170-100 LR, ERJ 170-100 SE, ERJ 170-100 STD and 11 more. Effective Mar 19, 2013
- [AD 2012-16-09](https://openairdocs.org/ad/2012-16-09): Air Conditioning · Embraer ERJ 170-100 LR, ERJ 170-100 SE, ERJ 170-100 STD and 11 more. Effective Sep 21, 2012
- [AD 2012-15-03](https://openairdocs.org/ad/2012-15-03): Landing Gear · Embraer ERJ 190-100 ECJ, ERJ 190-100 IGW, ERJ 190-100 LR and 4 more. Effective Sep 4, 2012
- [AD 2011-18-14](https://openairdocs.org/ad/2011-18-14): Nacelles/Pylons · Embraer - Empresa Brasileira de Aeronautica ERJ 190-100 ECJ, ERJ 190-100 IGW, ERJ 190-100 LR and 4 more. Effective Oct 14, 2011
- [AD 2011-18-04](https://openairdocs.org/ad/2011-18-04): Equipment/furnishings · Embraer - Empresa Brasileira de Aeronautica ERJ 170-100 LR, ERJ 170-100 SE, ERJ 170-100 STD and 11 more. Effective Oct 14, 2011
- [AD 2011-08-08](https://openairdocs.org/ad/2011-08-08): Electrical power · Embraer - Empresa Brasileira de Aeronautica ERJ 170-100 LR, ERJ 170-100 SE, ERJ 170-100 STD and 11 more. Effective May 18, 2011
- [AD 2011-01-09](https://openairdocs.org/ad/2011-01-09): Oxygen · Airbus A300 B2-1A, A300 B2-1C, A300 B2-203 and 290 more. Effective Feb 9, 2011
- [AD 2010-10-07](https://openairdocs.org/ad/2010-10-07): Wings · Embraer - Empresa Brasileira de Aeronautica ERJ 170-100 LR, ERJ 170-100 SE, ERJ 170-100 STD and 11 more. Effective Jun 17, 2010
- [AD 2010-08-02](https://openairdocs.org/ad/2010-08-02): Hydraulic power · Embraer - Empresa Brasileira de Aeronautica ERJ 170-100 LR, ERJ 170-100 SE, ERJ 170-100 STD and 11 more. Effective May 19, 2010
- [AD 2010-09-04](https://openairdocs.org/ad/2010-09-04): Navigation · Embraer - Empresa Brasileira de Aeronautica ERJ 170-100 LR, ERJ 170-100 SE, ERJ 170-100 STD and 13 more. Effective May 14, 2010
- [AD 2009-06-16](https://openairdocs.org/ad/2009-06-16): RAT (Ram air turbine) · Embraer - Empresa Brasileira de Aeronautica ERJ 170-100 LR, ERJ 170-100 SE, ERJ 170-100 STD and 11 more. Effective Apr 30, 2009
- [AD 2009-06-11](https://openairdocs.org/ad/2009-06-11): Wing lower skin stringers · Embraer - Empresa Brasileira de Aeronautica ERJ 190-100 ECJ, ERJ 190-100 IGW, ERJ 190-100 LR and 4 more. Effective Apr 28, 2009
- [AD 2008-23-17](https://openairdocs.org/ad/2008-23-17): Tie Down Straps · Embraer - Empresa Brasileira de Aeronautica ERJ 170-100 LR, ERJ 170-100 SE, ERJ 170-100 STD and 11 more. Effective Dec 30, 2008
- [AD 2008-18-01](https://openairdocs.org/ad/2008-18-01): Pressure equalization valve · Embraer - Empresa Brasileira de Aeronautica ERJ 170-100 LR, ERJ 170-100 SE, ERJ 170-100 STD and 11 more. Effective Oct 14, 2008

### Matched by engine (GE CF34-10E7 series)

- [AD 2025-14-03](https://openairdocs.org/ad/2025-14-03): Turbine Section · General Electric Company GE CF34-10E2A1, CF34-10E6, CF34-10E6A1 and 4 more. Effective Aug 25, 2025
- [AD 2025-10-04](https://openairdocs.org/ad/2025-10-04): Turbine Section · General Electric Company GE CF34-10E2A1, CF34-10E5, CF34-10E5A1 and 4 more. Effective Jun 26, 2025
- [AD 2022-05-08](https://openairdocs.org/ad/2022-05-08): Turbine Engine Oil System · General Electric CF34-10E2A1, CF34-10E5, CF34-10E5A1 and 4 more. Effective Apr 11, 2022
- [AD 2018-19-22](https://openairdocs.org/ad/2018-19-22): Turbine Engine Turbine Section · General Electric CF34-10A16, CF34-10E2A1, CF34-10E5 and 5 more. Effective Oct 25, 2018
- [AD 2012-01-10](https://openairdocs.org/ad/2012-01-10): Fan drive shaft · General Electric CF34-10E2A1, CF34-10E5, CF34-10E5A1 and 4 more. Effective Feb 27, 2012
- [AD 2011-18-02](https://openairdocs.org/ad/2011-18-02): Fan rotor spinner · General Electric CF34-10E2A1, CF34-10E5, CF34-10E5A1 and 4 more. Effective Sep 26, 2011
- [AD 2008-05-01](https://openairdocs.org/ad/2008-05-01): Fuel metering units (FMU) · General Electric CF34-10E2A1, CF34-10E5, CF34-10E5A1 and 8 more. Effective Apr 3, 2008
- [AD 2007-12-15](https://openairdocs.org/ad/2007-12-15): Main fuel pump (MFP) · General Electric CF34-10E2A1, CF34-10E5, CF34-10E5A1 and 3 more. Effective Jul 19, 2007
- [AD 2007-12-09](https://openairdocs.org/ad/2007-12-09): Combustor case · General Electric CF34-10E2A1, CF34-10E5, CF34-10E5A1 and 3 more. Effective Jul 10, 2007

### Historical (superseded or no longer in force)

- [AD 2022-08-07](https://openairdocs.org/ad/2022-08-07) (historical): Windows · Embraer ERJ 170-100 STD, ERJ 170-100 SU, ERJ 170-100 SE and 11 more. Effective Apr 26, 2022
- [AD 2020-12-12](https://openairdocs.org/ad/2020-12-12) (historical): Nacelles/pylons · Yaborã Indústria Aeronáutica ERJ 170-100 LR, ERJ 170-100 SE, ERJ 170-100 STD and 12 more. Effective Aug 13, 2020
- [AD 2019-24-16](https://openairdocs.org/ad/2019-24-16) (historical): Flight controls · Embraer ERJ 190-100 ECJ, ERJ 190-100 IGW, ERJ 190-100 LR and 4 more. Effective Feb 3, 2020
- [AD 2018-19-28](https://openairdocs.org/ad/2018-19-28) (historical): Nacelles/pylons · Embraer ERJ 190-100 ECJ, ERJ 190-100 IGW, ERJ 190-100 LR and 4 more. Effective Nov 2, 2018
- [AD 2017-16-08](https://openairdocs.org/ad/2017-16-08) (historical): Flight controls; Fuel; Doors; Fuselage; Nacelles/pylons; Stabilizers; Wings; Powerplant; and Exhaust. · Embraer ERJ 190-100 ECJ, ERJ 190-100 IGW, ERJ 190-100 LR and 4 more. Effective Oct 11, 2017
- [AD 2014-16-16](https://openairdocs.org/ad/2014-16-16) (historical): Nacelles/Pylons · Embraer ERJ 190-100 ECJ, ERJ 190-100 IGW, ERJ 190-100 LR and 4 more. Effective Sep 2, 2014
- [AD 2010-18-01](https://openairdocs.org/ad/2010-18-01) (historical): Airborne auxiliary power · Embraer - Empresa Brasileira de Aeronautica ERJ 170-100 LR, ERJ 170-100 SE, ERJ 170-100 STD and 11 more. Effective Sep 9, 2010
- [AD 2010-14-14](https://openairdocs.org/ad/2010-14-14) (historical): Pneumatic · Embraer - Empresa Brasileira de Aeronautica ERJ 170-100 LR, ERJ 170-100 SE, ERJ 170-100 STD and 11 more. Effective Aug 26, 2010
- [AD 2010-07-04](https://openairdocs.org/ad/2010-07-04) (historical): Fire protection · Embraer - Empresa Brasileira de Aeronautica ERJ 170-100 LR, ERJ 170-100 SE, ERJ 170-100 STD and 11 more. Effective Apr 9, 2010
- [AD 2006-20-06](https://openairdocs.org/ad/2006-20-06) (historical): Main fuel pump (MFP) inlet strainer · General Electric CF34-10E2A1, CF34-10E5, CF34-10E5A1 and 3 more. Effective Oct 16, 2006

## Information bulletins (advisory) (1 in force)

- [SAIB NM-20-12](https://openairdocs.org/saib/NM-20-12): Powerplant System - Operating in Icing Conditions. Issued Jun 18, 2020

## NTSB investigations

None matched to N783MM.

## FAA accident and incident reports

None matched to N783MM.

## Service difficulty reports

None filed for this aircraft. Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.

## STCs that may be installed (OpenAirDocs) (48)

Approved for this aircraft's airframe or engine model, in force first, then newest. The registry doesn't record which STCs an aircraft has; its records do.

### Approved for the airframe (Embraer ERJ 190-100 ECJ)

- [STC ST00885LA](https://openairdocs.org/stc/ST00885LA): Installation of fire extinguisher cartridges as replacements for Pacific Scientific fire extinguisher cartridges in fire extinguisher bottles. AMETEK AMERON, LLC d/b/a MASS Systems
- [STC ST04254NY](https://openairdocs.org/stc/ST04254NY): Installation of Viasat Satcom Software. ALOFT AeroArchitects
- [STC ST04328NY](https://openairdocs.org/stc/ST04328NY): The Manufacture and Installation of Exterior Placards, Labels and Signs is to be performed, installed. Libellule Monde Inc
- [STC ST12354IB](https://openairdocs.org/stc/ST12354IB): Installation of Starlink Aviation In-Flight Connectivity System. PMV Engineering
- [STC ST00030IB](https://openairdocs.org/stc/ST00030IB): Installation of Test Tech ELT. APTOZ EHF
- [STC ST03885AT](https://openairdocs.org/stc/ST03885AT): Installation of an Avionica, Inc. avCM Cellular Module. Aircraft Systems and Manufacturing Inc
- [STC ST02534SE](https://openairdocs.org/stc/ST02534SE): Installation and maintenance of a Crane Aerospace & Electronics Tire Pressure Sensor Assembly. ELDEC Corporation
- [STC ST02472AT](https://openairdocs.org/stc/ST02472AT): Installation of a mini Quick Access Recorder (QAR) model MKI, MKII, or MKIII. Aircraft Systems and Manufacturing Inc
- [STC ST11852IB](https://openairdocs.org/stc/ST11852IB): Installation of mounting device and power supply connection for PIVOT EFB. SABENA TECHNICS BGC
- [STC ST00079IB](https://openairdocs.org/stc/ST00079IB): Integration of Halon-free Portable Fire Extinguisher HAFEX. UMLAUT ENGINEERING GMBH
- [STC ST00215IB](https://openairdocs.org/stc/ST00215IB): Installation of saf-Tglo ECO Photoluminescent Aisle Path Marking Systems. STG AEROSPACE GERMANY GmbH
- [STC ST01936WI](https://openairdocs.org/stc/ST01936WI): Installation of LED lights. AeroLED's Holdings LLC
- [STC ST04562NY](https://openairdocs.org/stc/ST04562NY): Installation of saf-Tglo® SuperSeal UltraLite-X (SSUL-X) Photoluminescent Floor Proximity Emergency Escape Path Marking Systems. STG AEROSPACE GERMANY GmbH
- [STC ST00098IB](https://openairdocs.org/stc/ST00098IB): Introduction of ADS-B Out. STC Twenty One Limited
- [STC ST03407NY](https://openairdocs.org/stc/ST03407NY): Installation of a gogo Cabin Connectivity System. Delta Engineering Corporation
- [STC ST04535AT](https://openairdocs.org/stc/ST04535AT): Installation of the CES-170 Emergency Light Power Unit (ELPU). Chippewa Aerospace Inc
- [STC ST03422NY](https://openairdocs.org/stc/ST03422NY): Update of Intelsat components. Delta Engineering Corporation
- [STC ST00818DE](https://openairdocs.org/stc/ST00818DE): Installation of Honeywell Control Display Unit (CDU) model CD-830. Premier Air Center LLC d/b/a West Star Aviation
- [STC ST04177AT](https://openairdocs.org/stc/ST04177AT): Installation of a Talon Aerospace LED Replacement General Purpose Lamps. Aaxico Technical Services Inc
- [STC ST04116CH](https://openairdocs.org/stc/ST04116CH): Installation of 802.11 ac protocol Cabin Wireless Access Points (acWAP) retrofit for existing Cabin Wireless Access Points. Intelsat Inflight LLC
- [STC ST04049NY](https://openairdocs.org/stc/ST04049NY): Installation of a Hoffman Engineering LLC LED Landing Light to replace the OEM Q4559 Series Incandescent Lamp, used as a Landing/Takeoff Light. Hoffman Engineering LLC
- [STC ST04395NY](https://openairdocs.org/stc/ST04395NY): Change to introduce a modification to Zodiac Standard 'Elite' Double seats. 365 Aerospace Ltd Aerospace Logistics Centre
- [STC ST01000DE](https://openairdocs.org/stc/ST01000DE): Installation of MarathonNorco Aerospace Inc Nickel Cadmium battery. MarathonNorco Aerospace Inc
- [STC ST02700LA](https://openairdocs.org/stc/ST02700LA): Installation of Toilet Assembly. Monogram Systems
- [STC ST04340NY](https://openairdocs.org/stc/ST04340NY): Installation of TCAS 7.1 (ACAS II) upgrade of Prior Existing TCAS 7.0. Scandinavian Avionics Design ApS
- [STC ST09898AC](https://openairdocs.org/stc/ST09898AC): Installation of alternative/replacement trolleys and container; trolley part numbers. Driessen Aircraft Interior Systems USA Inc
- [STC ST04271NY](https://openairdocs.org/stc/ST04271NY): Installation of the Automated Flight Information Reporting System (AFIRS) 228. FLYHT Aerospace Solutions Ltd
- [STC ST04435AT](https://openairdocs.org/stc/ST04435AT): Installation of Astronics Passenger In-Seat Power in the Embraer ERJ-170-100, ERJ-170-200, ERJ-190-100 and ERJ-190-200 Series Aircraft. Chippewa Aerospace Inc
- [STC ST04361AT](https://openairdocs.org/stc/ST04361AT): Installation of a ADS-B Out. Chippewa Aerospace Inc
- [STC ST03904AT](https://openairdocs.org/stc/ST03904AT): Installation of an AirCell Airborne Wireless Wi-Fi System. Chippewa Aerospace Inc
- [STC ST02580SE](https://openairdocs.org/stc/ST02580SE): Installation of two Securaplane Model 9750W0360-12 24 VDC/28 Ah sealed lead acid batteries. Securaplane Technologies
- [STC ST03844NY](https://openairdocs.org/stc/ST03844NY): Installation of SuperSeal UltraLite (SSUL) PHOTOLUMINESCENT AISLE PATH MARKING SYSTEM. STG Aerospace Ltd
- [STC ST03776NY](https://openairdocs.org/stc/ST03776NY): Modification to upgrade existing Rockwell Collins TCAS (Model: TTR-920, TTR-921, and TTR-4000) at VERSION 7.0 to Rockwell Collins TCAS (Model: TTR-921, TTR-4000, and TTR-4100) at VERSION 7.1 (ACAS II). Scandinavian Avionics Design ApS
- [STC ST02622LA](https://openairdocs.org/stc/ST02622LA): Installation of Teledyne Controls Wireless Ground Link Quick Access Recorder (WQAR). Teledyne Controls
- [STC ST09859AC](https://openairdocs.org/stc/ST09859AC): Installation of a SkyTender Beverage Trolley. ASIG LLC
- [STC ST03880AT](https://openairdocs.org/stc/ST03880AT): Installation of LiveTV ISV System. Thales Avionics Inc
- [STC SA7076NM](https://openairdocs.org/stc/SA7076NM): Installation of Stretcher Carrier. Air Medic LLC
- [STC ST00002IB](https://openairdocs.org/stc/ST00002IB): Installation of Cockpit Door Surveillance System. AS Avionics Services SA
- [STC ST01727NY](https://openairdocs.org/stc/ST01727NY): Installation of an Executive Interior. PATS Aircraft LLC
- [STC ST03248CH](https://openairdocs.org/stc/ST03248CH): Installation of a BoardConnect In-Flight Entertainment (IFE) System. Astronics Armstrong Aerospace
- [STC ST04205AT](https://openairdocs.org/stc/ST04205AT): Installation of a Tablet Electronic Flight Bag (EFB). Chippewa Aerospace Inc
- [STC ST03523NY](https://openairdocs.org/stc/ST03523NY): Installation of Photoluminescent Emergency Floor Path Marking System. Lufthansa Technik AG
- [STC ST04147AT](https://openairdocs.org/stc/ST04147AT): Installation of a Constant Friction Mount and Cradle on Embraer 190-100/-200 series aircraft and associated hardware. Avionics Support Group Inc
- [STC ST03221CH](https://openairdocs.org/stc/ST03221CH): Certification of Compatibility with Cellular and Wireless Data Technologies. Armstrong Aerospace
- [STC ST03262NY](https://openairdocs.org/stc/ST03262NY): Installation of Quality Aircraft Interiors Oxygen Cylinder Restraint System (OCRS), P/N OCRS-1730-QAI, Models A & D. Quality Aircraft Interiors
- [STC ST01729NY-D](https://openairdocs.org/stc/ST01729NY-D): Installation of a Passenger Gaseous Oxygen Supply System. PATS Aircraft LLC
- [STC ST01728NY-D](https://openairdocs.org/stc/ST01728NY-D): Modification of the Class C Forward Cargo Compartment. PATS Aircraft LLC
- [STC ST01727NY-D](https://openairdocs.org/stc/ST01727NY-D) (historical): Installtion of Executive Interior. PATS Aircraft LLC

## Related

- Other Embraer ERJ 190-100 ECJ aircraft: https://openairdocs.org/model/embraer-erj-190-100-ecj/aircraft.md
- The GE CF34-10E7 series engine: https://openairdocs.org/engine/ge-cf34-10e7-series.md

---
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.
