# Brantly B-2B - Type: Aircraft model (FAA registry) - Registry code: 1440506 - Manufacturer (registry): BRANTLY - Model: B-2B - Aircraft type: Rotorcraft - Category: Rotorcraft - Engines: 1 · Reciprocating - Seats: 2 - Weight class: Up to 12,499 lb - Cruise speed: 75 mph - Certification: Type certificated - Data sheet: [TCDS 2H2](https://openairdocs.org/tcds/2H2) (OpenAirDocs) - Holder: Brantly International Inc. - Registered aircraft: 34 - Page: https://openairdocs.org/model/brantly-b-2b Model codes come from the FAA registry's reference file. ADs are matched to them by model name and maker. ## ADs that may apply (OpenAirDocs) Matched to this model by model name and maker. Each AD's applicability may narrow it by serial number, part number or equipment. - [AD 2023-11-07](https://openairdocs.org/ad/2023-11-07): Ground Proximity System · Airbus Helicopters 47, 206, 210 and 237 more. Effective Jun 22, 2023 - [AD 2021-26-09](https://openairdocs.org/ad/2021-26-09): Tail Rotor Head · Brantly International 305, B-2, B-2A and 1 more. Effective Jan 19, 2022 - [AD 2014-20-16](https://openairdocs.org/ad/2014-20-16): Main Rotor Blade · Brantly International B-2, B-2A and B-2B. Effective Nov 12, 2014 - [AD 2006-12-07](https://openairdocs.org/ad/2006-12-07): ECi cylinder assemblies · Aerostar AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 386 more. Effective Jul 11, 2006 - [AD 2006-08-07](https://openairdocs.org/ad/2006-08-07): Upper tail rotor vertical gearbox (gearbox) · Brantly International B-2, B-2A and B-2B. Effective May 2, 2006 - [AD 68-04-04 R2](https://openairdocs.org/ad/68-04-04-R2): Tail Rotor Blade · Brantly International B-2, B-2A and B-2B. Effective Feb 14, 1983 - [AD 81-17-01](https://openairdocs.org/ad/81-17-01): Starting Vibrator Assemblies · Bendix Starting Vibrator Assemblies, B-2, B-2A and 49 more. Effective Aug 13, 1981 - [AD 72-21-02](https://openairdocs.org/ad/72-21-02): Pylon Bearing Shaft · Brantly International B-2, B-2A and B-2B. Effective Dec 8, 1972 - [AD 71-17-05](https://openairdocs.org/ad/71-17-05): Main Rotor Mast · Brantly International B-2, B-2A and B-2B. Effective Nov 26, 1971 - [AD 68-05-02](https://openairdocs.org/ad/68-05-02): Tail Rotor Drive Shaft · Brantly International 305, B-2, B-2A and 1 more. Effective Mar 30, 1968 - [AD 67-09-02](https://openairdocs.org/ad/67-09-02): Main Rotor Mast · Brantly International B-2, B-2A and B-2B. Effective Apr 20, 1967 - [AD 65-28-01](https://openairdocs.org/ad/65-28-01): Tail Rotor Blades · Brantly International B-2, B-2A and B-2B. Effective Dec 14, 1965 - [AD 62-06-01](https://openairdocs.org/ad/62-06-01): Seat Back Adjustment · Brantly International B-2, B-2A and B-2B. Effective Mar 23, 1962 - [AD 62-05-02](https://openairdocs.org/ad/62-05-02): Fuel Pump Seals · Brantly International B-2, B-2A and B-2B. Effective Feb 28, 1962 - [AD 61-23-01](https://openairdocs.org/ad/61-23-01): Rotor Blade Bond Separation · Brantly International B-2, B-2A and B-2B. Effective Nov 4, 1961 - [AD 61-18-02](https://openairdocs.org/ad/61-18-02): Tail Rotor Modification · Brantly International B-2, B-2A and B-2B. Effective Aug 29, 1961 - [AD 61-16-04](https://openairdocs.org/ad/61-16-04): Transmission Mount Lug · Brantly International B-2, B-2A and B-2B. Effective Aug 14, 1961 - [AD 61-16-03](https://openairdocs.org/ad/61-16-03): Seat Modification · Brantly International B-2, B-2A and B-2B. Effective Aug 4, 1961 - [AD 61-11-02](https://openairdocs.org/ad/61-11-02): Oil System Modification · Brantly International B-2, B-2A and B-2B. Effective Aug 4, 1961 - [AD 61-11-01](https://openairdocs.org/ad/61-11-01): Landing Gear Drag Brace · Brantly International B-2, B-2A and B-2B. Effective May 31, 1961 - [AD 61-04-01](https://openairdocs.org/ad/61-04-01): Clutch Bolts · Brantly International B-2, B-2A and B-2B. Effective Feb 22, 1961 - [AD 60-26-03](https://openairdocs.org/ad/60-26-03): Drive Shaft Coupling · Brantly International B-2, B-2A and B-2B. Effective Dec 20, 1960 - [AD 60-10-02](https://openairdocs.org/ad/60-10-02): Main Rotor Blade · Brantly International B-2, B-2A and B-2B - [AD 60-07-02](https://openairdocs.org/ad/60-07-02): Tail Rotor Drive Shaft · Brantly International B-2, B-2A and B-2B - [AD 60-06-03](https://openairdocs.org/ad/60-06-03): Tail Rotor Guard · Brantly International B-2, B-2A and B-2B Historical (superseded or no longer in force): - [AD 2021-23-13](https://openairdocs.org/ad/2021-23-13) (historical): Ground Proximity System · Airbus Helicopters K-225, K-190A, K-240 and 237 more. Effective Dec 9, 2021 ## Information bulletins (advisory) (2) - [SAIB SW-07-28](https://openairdocs.org/saib/SW-07-28): Rotor blade cracks. Issued Apr 17, 2007 - [SAIB SW-04-90](https://openairdocs.org/saib/SW-04-90): . Issued Sep 23, 2004 ## Registered aircraft (34) - [N19GL](https://openairdocs.org/aircraft/N19GL): [Eastern Stearman Inc Trustee](https://openairdocs.org/faa-owner/EASTERN%20STEARMAN%20INC%20TRUSTEE), [Leesburg, VA](https://openairdocs.org/faa-place/VA/Leesburg), built 1992, S/N 2004 - [N2101U](https://openairdocs.org/aircraft/N2101U): [Vansurdam John R](https://openairdocs.org/faa-owner/VANSURDAM%20JOHN%20R), [Seneca, SC](https://openairdocs.org/faa-place/SC/Seneca), built 1961, S/N 147 - [N2171U](https://openairdocs.org/aircraft/N2171U): [Hillberg David](https://openairdocs.org/faa-owner/HILLBERG%20DAVID), [Fountain Valley, CA](https://openairdocs.org/faa-place/CA/Fountain%20Valley), S/N 333 - [N2173U](https://openairdocs.org/aircraft/N2173U): [International Air Services Inc Trustee](https://openairdocs.org/faa-owner/INTERNATIONAL%20AIR%20SERVICES%20INC%20TRUSTEE), [Carson City, NV](https://openairdocs.org/faa-place/NV/Carson%20City), built 1963, S/N 335 - [N2175U](https://openairdocs.org/aircraft/N2175U): [Optimus Aircraft Service Inc](https://openairdocs.org/faa-owner/OPTIMUS%20AIRCRAFT%20SERVICE%20INC), [Middletown, DE](https://openairdocs.org/faa-place/DE/Middletown), built 1963, S/N 337 - [N2179U](https://openairdocs.org/aircraft/N2179U): [Florea Byron](https://openairdocs.org/faa-owner/FLOREA%20BYRON), [Carencro, LA](https://openairdocs.org/faa-place/LA/Carencro), built 1963, S/N 341 - [N2191U](https://openairdocs.org/aircraft/N2191U): [Johnson Kenneth E](https://openairdocs.org/faa-owner/JOHNSON%20KENNETH%20E), [Mahtomedi, MN](https://openairdocs.org/faa-place/MN/Mahtomedi), built 1964, S/N 402 - [N2196U](https://openairdocs.org/aircraft/N2196U): [Zeiner Gary R](https://openairdocs.org/faa-owner/ZEINER%20GARY%20R), [Greencastle, IN](https://openairdocs.org/faa-place/IN/Greencastle), built 1964, S/N 407 - [N2236U](https://openairdocs.org/aircraft/N2236U): [Prater Jon A](https://openairdocs.org/faa-owner/PRATER%20JON%20A), [Palm Coast, FL](https://openairdocs.org/faa-place/FL/Palm%20Coast), built 1967, S/N 475 - [N2238U](https://openairdocs.org/aircraft/N2238U): [Hewitt Robert E](https://openairdocs.org/faa-owner/HEWITT%20ROBERT%20E), [Bybee, TN](https://openairdocs.org/faa-place/TN/Bybee), built 1968, S/N 479 - [N2241U](https://openairdocs.org/aircraft/N2241U): [Latimer Mark A](https://openairdocs.org/faa-owner/LATIMER%20MARK%20A), [Roanoke, TX](https://openairdocs.org/faa-place/TX/Roanoke), built 1968, S/N 482 - [N2252U](https://openairdocs.org/aircraft/N2252U): [Skylake Adventures LLC](https://openairdocs.org/faa-owner/SKYLAKE%20ADVENTURES%20LLC), [Geneva, OH](https://openairdocs.org/faa-place/OH/Geneva), S/N 411 - [N2257U](https://openairdocs.org/aircraft/N2257U): [Murray Richard A](https://openairdocs.org/faa-owner/MURRAY%20RICHARD%20A), [Celina, OH](https://openairdocs.org/faa-place/OH/Celina), S/N 418 - [N2259U](https://openairdocs.org/aircraft/N2259U): [Myrtle William E](https://openairdocs.org/faa-owner/MYRTLE%20WILLIAM%20E), [Martinsville, IN](https://openairdocs.org/faa-place/IN/Martinsville), built 1964, S/N 421 - [N2264U](https://openairdocs.org/aircraft/N2264U): [Janvrin Jerry M](https://openairdocs.org/faa-owner/JANVRIN%20JERRY%20M), [Buffalo, SD](https://openairdocs.org/faa-place/SD/Buffalo), S/N 426 - [N2270U](https://openairdocs.org/aircraft/N2270U): [Price Keyth E](https://openairdocs.org/faa-owner/PRICE%20KEYTH%20E), [Ossian, IN](https://openairdocs.org/faa-place/IN/Ossian), built 1964, S/N 433 - [N2271U](https://openairdocs.org/aircraft/N2271U): [Hockett James S](https://openairdocs.org/faa-owner/HOCKETT%20JAMES%20S), [Chiloquin, OR](https://openairdocs.org/faa-place/OR/Chiloquin), built 1964, S/N 436 - [N2272U](https://openairdocs.org/aircraft/N2272U): [Surplus Industrial Materials LLC](https://openairdocs.org/faa-owner/SURPLUS%20INDUSTRIAL%20MATERIALS%20LLC), [Centralia, WA](https://openairdocs.org/faa-place/WA/Centralia), S/N 437 - [N2277U](https://openairdocs.org/aircraft/N2277U): [Twin Falls, ID](https://openairdocs.org/faa-place/ID/Twin%20Falls), S/N 442, Registration pending - [N2284U](https://openairdocs.org/aircraft/N2284U): [Attitude Toys LLC](https://openairdocs.org/faa-owner/ATTITUDE%20TOYS%20LLC), [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington), S/N 454 - [N2288U](https://openairdocs.org/aircraft/N2288U): [Lay Jerry K](https://openairdocs.org/faa-owner/LAY%20JERRY%20K), [Minonk, IL](https://openairdocs.org/faa-place/IL/Minonk), built 1966, S/N 459 - [N2289U](https://openairdocs.org/aircraft/N2289U): [Eastern Stearman Inc Trustee](https://openairdocs.org/faa-owner/EASTERN%20STEARMAN%20INC%20TRUSTEE), [Leesburg, VA](https://openairdocs.org/faa-place/VA/Leesburg), built 1966, S/N 460 - [N2290U](https://openairdocs.org/aircraft/N2290U): [Van Surdam John R](https://openairdocs.org/faa-owner/VAN%20SURDAM%20JOHN%20R), [Seneca, SC](https://openairdocs.org/faa-place/SC/Seneca), built 1966, S/N 461 - [N2291U](https://openairdocs.org/aircraft/N2291U): [Hines Scott C](https://openairdocs.org/faa-owner/HINES%20SCOTT%20C), [Fort Worth, TX](https://openairdocs.org/faa-place/TX/Fort%20Worth), built 1966, S/N 462 - [N342ML](https://openairdocs.org/aircraft/N342ML): [Orlowski Michael A](https://openairdocs.org/faa-owner/ORLOWSKI%20MICHAEL%20A), [Gold Hill, NC](https://openairdocs.org/faa-place/NC/Gold%20Hill), S/N 343 - [N383ES](https://openairdocs.org/aircraft/N383ES): [Drake Air LLC](https://openairdocs.org/faa-owner/DRAKE%20AIR%20LLC), [Shelbyville, IN](https://openairdocs.org/faa-place/IN/Shelbyville), S/N 344 - [N400CX](https://openairdocs.org/aircraft/N400CX): [Coker Steve L III](https://openairdocs.org/faa-owner/COKER%20STEVE%20L%20III), [Tyler, TX](https://openairdocs.org/faa-place/TX/Tyler), built 1967, S/N 470 - [N45448](https://openairdocs.org/aircraft/N45448): [Sorg Dorothy](https://openairdocs.org/faa-owner/SORG%20DOROTHY), [Elizabethton, TN](https://openairdocs.org/faa-place/TN/Elizabethton), built 1997, S/N 2003 - [N64ZX](https://openairdocs.org/aircraft/N64ZX): [Oros John L](https://openairdocs.org/faa-owner/OROS%20JOHN%20L), [Port Charlotte, FL](https://openairdocs.org/faa-place/FL/Port%20Charlotte), S/N 404 - [N7WE](https://openairdocs.org/aircraft/N7WE): [Begley Edward R](https://openairdocs.org/faa-owner/BEGLEY%20EDWARD%20R), [Glasgow, KY](https://openairdocs.org/faa-place/KY/Glasgow), built 1964, S/N 432 - [N888CF](https://openairdocs.org/aircraft/N888CF): [Jph Aviation LLC](https://openairdocs.org/faa-owner/JPH%20AVIATION%20LLC), [Pittsburgh, PA](https://openairdocs.org/faa-place/PA/Pittsburgh), built 1965, S/N 457 - [N9011R](https://openairdocs.org/aircraft/N9011R): [Fraundorfer Steven M](https://openairdocs.org/faa-owner/FRAUNDORFER%20STEVEN%20M), [Edgerton, WI](https://openairdocs.org/faa-place/WI/Edgerton), S/N 2013 - [N9023M](https://openairdocs.org/aircraft/N9023M): [Brandis Robert J](https://openairdocs.org/faa-owner/BRANDIS%20ROBERT%20J), [Taylorville, IL](https://openairdocs.org/faa-place/IL/Taylorville), S/N 2020 - [N9061U](https://openairdocs.org/aircraft/N9061U): [Surplus Industrial Materials LLC](https://openairdocs.org/faa-owner/SURPLUS%20INDUSTRIAL%20MATERIALS%20LLC), [Kalama, WA](https://openairdocs.org/faa-place/WA/Kalama), S/N 2027 ## NTSB investigations (117, newest 50) From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. - [NTSB CEN20LA304](https://openairdocs.org/ntsb/CEN20LA304), Jul 24, 2020: Brantly B2B (N383ES), Monrovia, IN, destroyed, 1 fatal. Probable cause: The pilot’s loss of control after takeoff for reasons that could not be determined based on the available information. - [NTSB CEN18FA001](https://openairdocs.org/ntsb/CEN18FA001), Oct 1, 2017: Brantly B 2B (N2284U), Midland, MI, substantial damage, 1 fatal. Probable cause: The pilot's failure to maintain control of the helicopter, which resulted in a loss of tail rotor effectiveness, and his failure to promptly initiate the proper recovery technique, which resulted in… - [NTSB GAA17CA237](https://openairdocs.org/ntsb/GAA17CA237), Apr 18, 2017: Brantly B 2B (N2198U), Earl Park, IN, substantial damage. Probable cause: The pilot’s failure to recognize that he was operating in the weathercock stability flight regime of loss of tail rotor effectiveness, which resulted in a loss of directional control during the… - [NTSB CEN16LA135](https://openairdocs.org/ntsb/CEN16LA135), Mar 25, 2016: Brantly B 2B (N2266U), Galena, MO, substantial damage. Probable cause: The pilot’s loss of control for reasons that could not be determined because postaccident examination did not reveal any anomalies that would have precluded normal operation. - [NTSB ERA14CA259](https://openairdocs.org/ntsb/ERA14CA259), May 25, 2014: Brantly B 2B (N9023Z), Essex, MD, substantial damage. Probable cause: The pilot's failure to maintain helicopter control during landing resulting in a hard landing and a roll over. - [NTSB CEN13LA546](https://openairdocs.org/ntsb/CEN13LA546), Aug 29, 2013: Brantly B-2B (N2253U), Rothbury, MI, substantial damage. Probable cause: The pilot’s failure to maintain helicopter control while turning to avoid trees during an aborted takeoff in gusting wind conditions. - [NTSB CEN11LA067](https://openairdocs.org/ntsb/CEN11LA067), Nov 14, 2010: Brantly B-2B (N2268U), Post, TX, substantial damage, 1 fatal. Probable cause: The pilot's decision to operate the helicopter over the maximum gross weight and forward of the recommended center of gravity. - [NTSB CEN10CA371](https://openairdocs.org/ntsb/CEN10CA371), Jul 4, 2010: Brantly B-2B (N9011R), East Troy, WI, substantial damage. Probable cause: The pilot's failure to maintain control during landing. - [NTSB CEN09CA511](https://openairdocs.org/ntsb/CEN09CA511), Aug 9, 2009: Brantly B-2B (N9023Z), Martinsville, IN, substantial damage. Probable cause: The pilot's improper recovery during the autorotation. Contributing to the accident was the pilot's delayed remedial action to abort the practice autorotation. - [NTSB CEN09CA133](https://openairdocs.org/ntsb/CEN09CA133), Jan 14, 2009: Brantly B-2B (N2252U), Cement, OK, substantial damage. Probable cause: The pilot's failure to maintain proper airspeed and descent rate during approach, which resulted in a hard landing. Contributing to the accident were the nearby power lines. - [NTSB CEN09CA068](https://openairdocs.org/ntsb/CEN09CA068), Nov 20, 2008: Brantly B-2B (N2180U), Cedar Hill, TX, substantial damage. Probable cause: The pilot's improper decision to takeoff downwind. A contributing factor was the gusty conditions. - [NTSB WPR09LA039](https://openairdocs.org/ntsb/WPR09LA039), Nov 17, 2008: Brantly B-2B (N2274U), Camas, WA, substantial damage. Probable cause: A loss of engine power for undermined reasons. Contributing to the accident was the low altitude and airspeed, which precluded making a safe autorotation. - [NTSB DFW06CA217](https://openairdocs.org/ntsb/DFW06CA217), Sep 29, 2006: Brantly Helicopter B-2B (N888CF), Carrizo Springs, TX, substantial damage. Probable cause: The loss of engine power due to a malfunction of the electric fuel pump. A contributing factor was the lack of suitable terrain for the forced landing. - [NTSB ATL06LA059](https://openairdocs.org/ntsb/ATL06LA059), Apr 2, 2006: Brantly Helicopter B2B (N2183U), Cullman, AL, destroyed. Probable cause: The pilot's failure to maintain a visual look out while maneuvering resulting in an in-flight collision with wires and the ground. A factor in the accident was the pilot's lack of recent experience… - [NTSB MIA05LA136](https://openairdocs.org/ntsb/MIA05LA136), Jul 24, 2005: Brantly Helicopter B2B (N9023M), Ft. Pierce, FL, substantial damage. Probable cause: The pilot's inadequate preflight planning/preparation, and failure to refuel the helicopter prior to takeoff which resulted in fuel exhaustion and a loss of engine power during the landing. - [NTSB IAD05LA107](https://openairdocs.org/ntsb/IAD05LA107), Jul 24, 2005: Brantly Helicopter B-2B (N9018Y), Plymouth, MA, substantial damage. Probable cause: Fatigue failure of the intermediate tailrotor driveshaft, which resulted in a loss of directional control at a hover. - [NTSB CHI05CA120](https://openairdocs.org/ntsb/CHI05CA120), May 20, 2005: Brantly Helicopter B-2B (N2274U), Lakeview, MI, substantial damage. Probable cause: The dual student failed to maintain adequate rotor rpm during the practice autorotation and the instructor's delay in attempting remedial action. A factor associated with the accident was the soft… - [NTSB FTW04LA111](https://openairdocs.org/ntsb/FTW04LA111), Apr 21, 2004: Brantly Helicopter B-2B (N9030Z), Holliday, TX, substantial damage. Probable cause: The failure of the upper tail rotor shaft due to excessive misalignment after two hard landings. Also causal was the manufacturer's failure to provide specific maintenance procedures for checking the… - [NTSB MIA03LA104](https://openairdocs.org/ntsb/MIA03LA104), May 5, 2003: Brantly B-2B (N2141U), Lantana, FL, substantial damage. Probable cause: The pilot/owner's failure to maintain rotor rpm which resulted in a loss of control. Contributing factors were high gross weight and high density altitude. - [NTSB NYC03LA063](https://openairdocs.org/ntsb/NYC03LA063), Mar 8, 2003: Brantly Helicopter B-2B (N2238U), Zelienople, PA, substantial damage. Probable cause: The failure of the tail rotor assembly due to improper maintenance by the owner/pilot. - [NTSB FTW03LA011](https://openairdocs.org/ntsb/FTW03LA011), Oct 12, 2002: Brantly Helicopter B-2B (N9008H), Vinson, OK, substantial damage. Probable cause: The pilot's inadvertent flight into adverse weather conditions during cruise resulting in his failure to maintain control of the helicopter, and his failure to maintain rotor rpm. Contributing… - [NTSB MIA01FA075](https://openairdocs.org/ntsb/MIA01FA075), Feb 11, 2001: Brantly B-2B (N2166U), Archer, FL, destroyed, 2 fatal. Probable cause: The flight crew's loss of control for undermined reasons. - [NTSB CHI99LA292](https://openairdocs.org/ntsb/CHI99LA292), Aug 15, 1999: Brantly Helicopter B-2B (N2238U), Hudson, MI, substantial damage. Probable cause: was an inadequate preflight and misjudged flare to landing during the autorotation by the pilot. A factor in this accident was a totally blocked fuel tank vent system. - [NTSB CHI99LA033](https://openairdocs.org/ntsb/CHI99LA033), Nov 23, 1998: Brantly Helicopter B2B (N2291U), Salem, IL, substantial damage. Probable cause: The simulated emergency procedure by the pilot-in-command. Additional causes were the directional control not obtained/maintained by the pilot-in-command and the inadequate supervision by the Federal… - [NTSB IAD96LA088](https://openairdocs.org/ntsb/IAD96LA088), Jun 2, 1996: Brantly Helicopter B2B (N2261U), Oakwood, OH, destroyed. Probable cause: a loss of engine power due to inadequate maintenance and inspection by the owner/operator which failed to detect the clogged fuel vent line, and the pilot's improper autorotation. A related factor… - [NTSB CHI95LA130](https://openairdocs.org/ntsb/CHI95LA130), Apr 19, 1995: Brantly Helicopter B-2B (N2198U), Winfield, KS, substantial damage. Probable cause: The total failure of the rotor drive system clutch assembly due to excessive wear of the clutch assembly. A factor in this accident was the soft ground in the emergency landing area. - [NTSB FTW95LA172](https://openairdocs.org/ntsb/FTW95LA172), Mar 9, 1995: Brantly Helicopter B-2B (N2266U), Elk City, OK, substantial damage. Probable cause: THE PILOT'S FAILURE TO MAINTAIN PROPER ALTITUDE DURING A HOVERING TURN. A FACTOR WAS THE LOW TEMPERATURE. - [NTSB FTW95LA029](https://openairdocs.org/ntsb/FTW95LA029), Oct 24, 1994: Brantly Helicopter B-2B (N2166U), Tomball, TX, substantial damage. Probable cause: A PARTIAL POWER LOSS FOR UNDETERMINED REASONS. A FACTOR WAS THE LACK OF SUITABLE TERRAIN FOR THE FORCED LANDING. - [NTSB CHI93LA156](https://openairdocs.org/ntsb/CHI93LA156), May 1, 1993: Brantly-Hynes B2B (N2257U), Greencastle, IN, substantial damage. Probable cause: CONTAMINATION OF THE FUEL SYSTEM BY PARTICULATE MATTER OF AN UNKNOWN ORIGIN. - [NTSB MIA90LA150](https://openairdocs.org/ntsb/MIA90LA150), Jul 10, 1990: Brantly Helicopter B-2B (N2284U), Christiansted, substantial damage. Probable cause: THE FAILURE OF THE PILOT TO EVALUATE WEIGHT, TEMPERATURE, AND POWER AVAILABLE PRIOR TO TAKEOFF AND THEN PERFORMING A LEFT PEDAL TURN AFTER TAKEOFF RESULTING IN THE HELICOPTER DESENDING EVEN THOUGH… - [NTSB FTW88LA152](https://openairdocs.org/ntsb/FTW88LA152), Aug 25, 1988: Brantly Helicopter B-2B (N2264U), Sallisaw, OK, substantial damage - [NTSB FTW88LA073](https://openairdocs.org/ntsb/FTW88LA073), Feb 27, 1988: Brantly Helicopter B-2B (N2233U), Decatur, TX, substantial damage - [NTSB CHI86LA157](https://openairdocs.org/ntsb/CHI86LA157), Jun 17, 1986: Brantly Helicopter B-2B (N2295U), Griffith, IN, substantial damage - [NTSB CHI86LA134](https://openairdocs.org/ntsb/CHI86LA134), Apr 27, 1986: Brantly Helicopter B-2B (N2194U), Mt Clemens, MI, destroyed - [NTSB FTW84LA381](https://openairdocs.org/ntsb/FTW84LA381), Sep 8, 1984: Brantly Helicopter B-2B (N2161U), Alvin, TX, destroyed - [NTSB NYC84LA070](https://openairdocs.org/ntsb/NYC84LA070), Feb 12, 1984: Brantly Helicopter B-2B (N2273U), Mt. Pleasant, PA, substantial damage - [NTSB MIA82DA138](https://openairdocs.org/ntsb/MIA82DA138), Jun 21, 1982: Brantly B-2B (N2282U), Ruskin, FL, destroyed - [NTSB ANC82DAA03](https://openairdocs.org/ntsb/ANC82DAA03), May 23, 1982: Brantly B-2B (N2195U), Fairbanks, AK, substantial damage - [NTSB ATL82FIJ01](https://openairdocs.org/ntsb/ATL82FIJ01), May 9, 1982: Brantley B-2B (N2255U), Athens, WV, substantial damage, 1 fatal - [NTSB DEN81FTA03](https://openairdocs.org/ntsb/DEN81FTA03), Oct 18, 1981: Brantly B-2B (N2271U), Broadus, MT, substantial damage - [NTSB NYC81FGT10](https://openairdocs.org/ntsb/NYC81FGT10), Aug 19, 1981: Brantly B-2B (N2277U), New Cumberland, PA, substantial damage - [NTSB CHI81FA064](https://openairdocs.org/ntsb/CHI81FA064), Jun 10, 1981: Brantley B2B (N2276U), Chesterton, IN, destroyed, 2 fatal - [NTSB ATL80FLA03](https://openairdocs.org/ntsb/ATL80FLA03), May 10, 1980: Brantley B-2B (N2252U), Valdosta, GA, substantial damage - [NTSB FTW80DPJ01](https://openairdocs.org/ntsb/FTW80DPJ01), Oct 1, 1979: Brantly B-2B (N2191U), Guymon, OK, substantial damage - [NTSB ANC79DAG78](https://openairdocs.org/ntsb/ANC79DAG78), Aug 13, 1979: Brantly B-2B (N2183U), Wasilla, AK, substantial damage - [NTSB CHI79DEV28](https://openairdocs.org/ntsb/CHI79DEV28), Jul 23, 1979: Brantly B-2B (N2283U), Flanagan, IL, substantial damage - [NTSB CHI79DET14](https://openairdocs.org/ntsb/CHI79DET14), Feb 5, 1979: Brantly B2B (N2285U), Kendallville, IN, substantial damage - [NTSB MKC79FA009](https://openairdocs.org/ntsb/MKC79FA009), Dec 15, 1978: Brantly B-2B (N1122K), Sloan, IA, destroyed, 2 fatal - [NTSB CHI78FA066](https://openairdocs.org/ntsb/CHI78FA066), Sep 11, 1978: Brantley B-2B (N2284U), Brook, IN, destroyed, 1 fatal - [NTSB ANC79FA051](https://openairdocs.org/ntsb/ANC79FA051), Jul 14, 1978: Brantly B2-B (N2281U), Nome, AK, substantial damage, 1 fatal All 117: https://openairdocs.org/model/brantly-b-2b/ntsb.md ## FAA accident and incident reports (71, newest 50) From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. - [Accident 20200724010989A](https://openairdocs.org/incident/20200724010989A), Jul 24, 2020: Brantly B-2B (N383ES), Monrovia, IN, Destroyed, 1 fatal. On July 24, 2020, at approximately 1300 eastern daylight time, a 1963 Brantly B2B rotorcraft, N383ES, was destroyed after crashing to the ground near Monrovia,… - [Accident 20171001014289A](https://openairdocs.org/incident/20171001014289A), Oct 1, 2017: Brantly B-2B (N2284U), Midland, MI, Destroyed, 1 fatal. Helicopter appeared to 'settle with power' shortly after takeoff, crash-landing in field rolling onto its left side. - [Accident 20170418003339A](https://openairdocs.org/incident/20170418003339A), Apr 18, 2017: Brantly B-2B (N2198U), Earl Park, IN, Destroyed. On April 18, 2017 at about 1020 eastern daylight time, a Brantly B2-B helicopter, N2198U sustained substantial damage when it impacted a field and rolled on… - [Accident 20160325002519A](https://openairdocs.org/incident/20160325002519A), Mar 25, 2016: Brantly B-2B (N2266U), Galena, MO, Destroyed. Witness observed the helicopter flying low over wooded area near Galena, MO when it appeared to spin around and crash into the trees. - [Accident 20140525008899A](https://openairdocs.org/incident/20140525008899A), May 25, 2014: Brantly B-2B (N9023Z), Hart Miller Isl, MD, Substantial damage. After a thorough preflight, [privacy data omitted] and his passenger [privacy data omitted] departed martin state airport (kmtn). [privacy data omitted] Is not… - [Accident 20130829017319A](https://openairdocs.org/incident/20130829017319A), Aug 29, 2013: Brantly B-2B (N2253U), Rothbury, MI, Substantial damage. On August 29, 2013, approximately 16:45 central daylight time, a Brantly B-2B helicopter, N2253U, sustained substantial damage when it impacted terrain while… - [Accident 20101114051339A](https://openairdocs.org/incident/20101114051339A), Nov 14, 2010: Brantly B-2B (N2268U), Post, TX, Substantial damage, 1 fatal. This aircraft accident investigation number CEN11LA067 involves the fatality of the owner of N2268U, serial number B2B-430-TC2H2-PC-204, a brantley B-2B… - [Accident 20100704055359A](https://openairdocs.org/incident/20100704055359A), Jul 4, 2010: Brantly B-2B (N9011R), East Troy, WI, Substantial damage. Pilot landed the helicopter from a hovering autorotation on the turf runway 18 at East Troy Municipal Airport (57C) at the conclusion of a maintenance check… - [Accident 20090809049149A](https://openairdocs.org/incident/20090809049149A), Aug 9, 2009: Brantly B-2B (N9023Z), Martinsville, IN, Substantial damage. In preparation for a scheduled rotorcraft rating check ride, the pilot was practicing autorotation maneuvers in close proximity to, and north of, a bean field.… - [Accident 20090114000429A](https://openairdocs.org/incident/20090114000429A), Jan 14, 2009: Hynes B2B (N2252U), Cement, OK, Substantial damage. (-23) The pilot was landing during a test flight off of rented property approximately 2 minutes duration. One skid touched and the pilot over reacted with the… - [Accident 20081120851899A](https://openairdocs.org/incident/20081120851899A), Nov 20, 2008: Brantl B2B (N2180U), Cedra Hill, TX, Destroyed. (-23) The pilot indicated that he took off at about 15:00 with one passenger. Winds were at about 90 degree cross wind. The helicopter climbed to 40'. The… - [Accident 20081117852299A](https://openairdocs.org/incident/20081117852299A), Nov 17, 2008: Brantl B2B (N2274U), Camas, WA, Substantial damage. (-23) The helicopter was being flown for the purpose of conducting an instructional flight. The owner/student had flown for approximately 15 minutes and made… - [Accident 20060929027849A](https://openairdocs.org/incident/20060929027849A), Sep 29, 2006: Hynes B2B (N888CF), Carrizo Springs, TX, Substantial damage. (-23) On September 29, 2006, approximately 2336 CST, the pilot in command of N888CF (a brantly rotorcraft, serial number 457), after departing Carrizo Springs… - [Accident 20060401004719A](https://openairdocs.org/incident/20060401004719A), Apr 1, 2006: Hynes B2B (N2183U), Cullman, AL, Destroyed. (-23) The pilot [privacy data omitted] departed from his privately owned heliport located on his property adjacent to his residence [privacy data omitted] .… - [Accident 20050724020509A](https://openairdocs.org/incident/20050724020509A), Jul 24, 2005: Hynes B2B (N9023M), Ft Pierce, FL, Destroyed. (-23) Pilot said that while cruising at 1000' he felt a "de-torque" or the feeling of a spark plug misfiring. Then the engine stopped running and he landed in… - [Accident 20050724017949A](https://openairdocs.org/incident/20050724017949A), Jul 24, 2005: Hynes B2B (N9018Y), Plymouth, MA, Destroyed. (-23) Pilot reported that while in hover at two feet AGL, the helicopter began to rotate to the right and tail rotor input was ineffective. As the speed of the… - [Accident 20050520013569A](https://openairdocs.org/incident/20050520013569A), May 20, 2005: Hynes B2B (N2274U), Lakeview, MI, Destroyed. (-23) On 5/20/05, the instructor is given lesson to an individual, who hold private pilot certificate but a student pilot for the helicopter training. While… - [Incident 20040623035689I](https://openairdocs.org/incident/20040623035689I), Jun 23, 2004: Hynes B2B (N9023Z), Frankenmuth, MI, Minor damage. (-23) [privacy data omitted] because he was taxiing 4 feet off the ground when he lost control in mild wind conditions. - [Accident 20040421008179A](https://openairdocs.org/incident/20040421008179A), Apr 21, 2004: Hynes B2B (N9030Z), Wichita Falls, TX, Substantial damage. (-23) On April 21, 2004, at 1045 central daylight time, a brantly B-2B helicopter, N9030Z, owned by brantly international incorporated, crashed. The helicopter… - [Accident 20030505015059A](https://openairdocs.org/incident/20030505015059A), May 5, 2003: Hynes B2B (N2141U), Lantana, FL, Substantial damage. (-23) On may 5, 2003 brantly helicopter operating under FAR 91 crashed in Lantana Florida. It appears as if the cause of the accident may have been due to… - [Accident 20030308003099A](https://openairdocs.org/incident/20030308003099A), Mar 8, 2003: Hynes B2B (N2238U), Zelienople, PA, Substantial damage. (-23) The operator (only occupant) of the aircraft was not a certified (licensed) helicopter pilot. He explained that as he hovered above the southern end of… - [Accident 20021012026619A](https://openairdocs.org/incident/20021012026619A), Oct 12, 2002: Hynes B2B (N9008H), Vinson, OK, Substantial damage. (.19) On October 12, 2002, approximately 0945 central daylight time, a brantly B-2B single-engine helicopter, N9008H, was substantially damaged after impacting… - [Incident 20010519012139I](https://openairdocs.org/incident/20010519012139I), May 19, 2001: Hynes B2B (N2101U), Detroit, Minor damage. (-23)Engine failed and auto-rotation attempted to land in parking lot on livernois, between lavon and hamlin, Detroit, MI. Right strut collapsed on skid system… - [Accident 19990815012069A](https://openairdocs.org/incident/19990815012069A), Aug 15, 1999: Hynes B2B (N2238U), Jackson, MI, Substantial damage. Acft made an emergency landing after the engine quit, and the acft sustained substantial damage on landing. (.19) on August 15, 1999, at 1916 eastern daylight… - [Accident 19981123031489A](https://openairdocs.org/incident/19981123031489A), Nov 23, 1998: Hynes B2B (N2291U), Salem, IL, Substantial damage. 1966 Brantly B-2B helicopter was on an FAA check ride and the pilot was demonstrating a hovering turn (.19) on November 23, 1998, at 1245 central daylight… - [Accident 19960805024509A](https://openairdocs.org/incident/19960805024509A), Aug 5, 1996: Hynes B2B (N2261U), Oakwood, OH, Substantial damage. Lost power made hard autorotation landing. Had lost fuel pressure. Fuel vent tube insect clogged. 1970 last annual. - [Accident 19960601046449A](https://openairdocs.org/incident/19960601046449A), Jun 1, 1996: N2261U, Oakwood, OH, No damage. (-23) Pilot stated he experienced an inflight engine failure and attempted an emergency landing. During the landing attempt the helicopter struck a ditch and… - [Accident 19950419008699A](https://openairdocs.org/incident/19950419008699A), Apr 19, 1995: Hynes B2B (N2198U), Winfield, KS, Substantial damage. Power clutch failed. Auto rotated. Rolled over landing. Inspection showed worn tangs due lack grease during service - [Accident 19950308013849A](https://openairdocs.org/incident/19950308013849A), Mar 8, 1995: Hynes B2B (N2266U), Elk City, OK, Substantial damage. During hover taxi dragged a skid on ramp. Main rotors hit ramp. Helicopter rolled onto its side. - [Accident 19941024035629A](https://openairdocs.org/incident/19941024035629A), Oct 24, 1994: Hynes B2B (N2166U), Houston, TX, Substantial damage. Appeared loose lift on climbout. Flared late. Landed hard. Collapsed skid. Rolled over. Possible settling with power - [Accident 19930501013009A](https://openairdocs.org/incident/19930501013009A), May 1, 1993: Hynes B2B (N2257U), Greencastle, IN, Substantial damage. Lost power. Autorotated to hard landing and rolled over. Found sand like material in fuel system. - [Accident 19900912047329A](https://openairdocs.org/incident/19900912047329A), Sep 12, 1990: Hynes B2B (N2159U), Novato, CA, Substantial damage. Skid hit soft ground during power recovery from simulated autorotation,rotors hit ground. FAA designee flight test. - [Accident 19900710024769A](https://openairdocs.org/incident/19900710024769A), Jul 10, 1990: Hynes B2B (N2284U), Christiansted, Puerto Rico, Substantial damage. Lifted from pad. Made pedal turn to depart downhill. Settled. Skid hit tree stump rolling helicopter over. - [Accident 19880825035249A](https://openairdocs.org/incident/19880825035249A), Aug 25, 1988: Hynes B2B (N2264U), Sallisaw, OK, Substantial damage. Lost tail rotor control during 3 foot hover. Spun around, hit ground and rolled over. Driveshaft coupling failed. - [Accident 19880227027119A](https://openairdocs.org/incident/19880227027119A), Feb 27, 1988: Hynes B2B (N2233U), La Porte, TX, Substantial damage. Lifted helicopter to move it closer to gas pumps. Wind gust caused a skid to hit and collapse. Rotors then impacted - [Accident 19860616083319A](https://openairdocs.org/incident/19860616083319A), Jun 16, 1986: Hynes B2B (N2295U), Griffith, IN, Substantial damage. The helicopter rolled over on landing. Student lost control on final and instructor recovered just prior to impact. - [Accident 19860427014509A](https://openairdocs.org/incident/19860427014509A), Apr 27, 1986: Hynes B2B (N2194U), Mt Clemens, MI, Destroyed. Engine connecting rod failed and aircraft struck trees during landing. Pilot had no license. Engine annual overdue. - [Accident 19840908047559A](https://openairdocs.org/incident/19840908047559A), Sep 8, 1984: Hynes B2B (N2161U), Alvin, TX, Destroyed. Engine quit on landing approach. Pilot allowed rotor RPM decay and crash landed short of runway flipped over. - [Accident 19840212051689A](https://openairdocs.org/incident/19840212051689A), Feb 12, 1984: Hynes B2B (N2273U), Mt Pleasant, PA, Substantial damage. Lost control and rotor RPM during approach to a landing. Impact caused rotors to strike the muddy ground. - [Incident 19830810047669I](https://openairdocs.org/incident/19830810047669I), Aug 10, 1983: Hynes B2B (N2174U), Selinsgrove, PA, Destroyed. Mechanic lost control during an engine runup. Helicopter made a 360 and rolled over. - [Accident 19820621023639A](https://openairdocs.org/incident/19820621023639A), Jun 21, 1982: Hynes B2B (N2282U), Ruskin, FL, Destroyed. Pilot experienced heavy vibration followed by loss of control. Helicopter crashed out of control. - [Accident 19820523046729A](https://openairdocs.org/incident/19820523046729A), May 23, 1982: Hynes B2B (N2195U), Fairbanks, AK, Substantial damage. Crash occurred during autorotation after engine lost power. - [Accident 19820509014309A](https://openairdocs.org/incident/19820509014309A), May 9, 1982: Hynes B2B (N2255U), Athens, WV, Substantial damage. Helicopter crashed in woods area from unknown reasons. - [Accident 19811018067859A](https://openairdocs.org/incident/19811018067859A), Oct 18, 1981: Hynes B2B (N2271U), Broadus, MT, Substantial damage. Helicopter herding horses and skid caught sage brush which pulled aircraft into ground, causing crash. - [Accident 19810819052099A](https://openairdocs.org/incident/19810819052099A), Aug 19, 1981: Hynes B2B (N2277U), New Cumberland, PA, Substantial damage. Allowed rotor RPM to decay on climbout from a low pass over river. Helicopter settled into river. - [Accident 19810721089949A](https://openairdocs.org/incident/19810721089949A), Jul 21, 1981: Hynes B2B (N2295U), Chapin, IL, Substantial damage. Lost power while pollinating an orchard. Hard landing damaged helicopter. Oil line to exhaust valves separated. - [Accident 19810610031949A](https://openairdocs.org/incident/19810610031949A), Jun 10, 1981: Hynes B2B (N2276U), Chesterton, IN, Destroyed. Tail rotor blade failure from fatigue cracking. Seperated blade struck main rotor blade. Helicopter spun in. - [Incident 19800519054059I](https://openairdocs.org/incident/19800519054059I), May 19, 1980: Hynes B2B (N2296U), Okeene, OK, Minor damage. Forced landing made after pilot heard loud noises. Suspect water in fuel. - [Accident 19800510012859A](https://openairdocs.org/incident/19800510012859A), May 10, 1980: Hynes B2B (N2252U), Valdosta, GA, Substantial damage. Rotor RPM delayed during practice quick stop & hover. Resulting impact with ground damaged chopper. - [Incident 19791101056189I](https://openairdocs.org/incident/19791101056189I), Nov 1, 1979: Hynes B2 (N2253U), Batavia, NY, Substantial damage. Student crashed helicopter during go-around by failing to friction collective in full down position. All 71: https://openairdocs.org/model/brantly-b-2b/incidents.md ## Service difficulty reports (2) As reported by operators and repair stations, by the model named in the report. - [SDR 2004FA0000689](https://openairdocs.org/sdr/2004FA0000689), Jun 23, 2004: SHAFT. FAILED. TAIL ROTOR DRIVE FROM 90 GEARBOX TO TAIL ROTOR GEARBOX FAIL AT ATTACHING POINT IN TAIL ROTOR GEARBOX. BY THE DISCOLORATION OF THE BREAK IT APPEARS THAT IT HAD P - [SDR 2003FA0000458](https://openairdocs.org/sdr/2003FA0000458), Mar 8, 2003: RING. SEPARATED. DURING ACCIDENT INVESTIGATION, FOUND TOP BULKHEAD RING SEPARATED FROM TAILBOOM PYLON. TAIL ROTOR GEARBOX WAS STILL ATTACHED TO BULKHEAD RING. BULKHEAD RING HAD ## STCs that may be installed (OpenAirDocs) (20) Approved for this model: the STC's model list names it on its data sheet, or a series that includes it. In force first, then newest. The registry doesn't record which STCs an aircraft has. - [STC SH3319NM](https://openairdocs.org/stc/SH3319NM): Installation of Precise Flight Pulselite Control Unit in the Landing /Taxi Recognition Visual Control Light system,. Precise Flight Inc - [STC SA11137SC](https://openairdocs.org/stc/SA11137SC): Installation of Plane-Power ALT-FLX alternator. Hartzell Engine Technologies, LLC - [STC SR02704SE](https://openairdocs.org/stc/SR02704SE): Installation and maintenance of the Sunspot 36 and 46 series lights. AeroLED's Holdings LLC - [STC SR00359BO](https://openairdocs.org/stc/SR00359BO): Installation of Parmetheus Plus LED PAR36 and PAR46 taxi and landing lights. Whelen Aerospace Technologies - [STC SR01802WI](https://openairdocs.org/stc/SR01802WI): To allow the use of UL91 or UL94 (minimum) grade aviation fuel per ASTM D7547. Swift Fuels LLC - [STC SR02394AK](https://openairdocs.org/stc/SR02394AK): Replacement of existing landing and/or hover light bulbs with Light Emitting Diode (LED) lighting system. Seaplanes North LLC - [STC SA01669CH](https://openairdocs.org/stc/SA01669CH): Installation of Challenger Reusable Air Filter. Challenger Aviation Products Inc - [STC SH11CE](https://openairdocs.org/stc/SH11CE): Installation of Hoskins Twilighter Mk II supplementary lights. BF Goodrich Aerospace - [STC SA1315WE](https://openairdocs.org/stc/SA1315WE): Installation of Mixture Monitor (exhaust gas temperature probe, gage and selector) in accordance with Delta Products Part Lists A-192 and A-193, or in accordance with Tri-Star Corporation Mixture Monitor Installation Instructions dated December 9, 1981, or later FAA approved revision and/or Drawing List MM-127 dated November 15, 1981, or later FAA approved revision in aircraft models listed in Master Eligibility List P-80-A-6 revised March 29, 1968, copy attached, or later FAA approved revision. Universal Corporation - [STC SA00068SE](https://openairdocs.org/stc/SA00068SE): Installation of fuel flow/pressure instruments. (W/TSIO-360-MB1). Electronics International Inc - [STC SA02033AT](https://openairdocs.org/stc/SA02033AT): Modification to install an air-oil separator to prevent oil from being aspirated from the engine breather line. M-20 Oil Separators LLC - [STC SA00680SE](https://openairdocs.org/stc/SA00680SE): Installation of Electronics International model UBG-16 or UBG-16T bar graph engine analyzer. Electronics International - [STC SA489EA](https://openairdocs.org/stc/SA489EA): Installation of ARP Inc. carburetor ice detection system. Aircraft & Rotorcraft Products (ARP) Inc - [STC SA02520AT](https://openairdocs.org/stc/SA02520AT): Installation of M-20 Oil Separator, model 600-WP. M-20 Oil Separators LLC - [STC SH12CE](https://openairdocs.org/stc/SH12CE): Replace existing engine induction air filter with AC Spark Plug Filter. Brackett Aero Filters Inc - [STC SA2350NM PAGE 1](https://openairdocs.org/stc/SA2350NM%20PAGE%201): Installation of Electronics International Inc digital carburetor/outside air temperature gauges. Electronics International - [STC SA4302NM](https://openairdocs.org/stc/SA4302NM): Installation of Electronics Int'l digital automatic engine analyzer. Electronics International - [STC SA3862NM PAGE 1](https://openairdocs.org/stc/SA3862NM%20PAGE%201): Installation of Electronics International Primary TIT/EGT/CHT instruments, remote switches and associated accessories. Electronics International - [STC SA2190NM PAGE 1](https://openairdocs.org/stc/SA2190NM%20PAGE%201): Installation of electronics International Digital Volt/Amp Gauges and Accessories. Electronics International - [STC SA2350NM](https://openairdocs.org/stc/SA2350NM) (historical): Installation of Electronics International Inc digital carburetor/outside air temperature gauges listed on the attached continuation sheet and the associated accessories. Electronics International ## The same model under other registry codes Amateur-built copies and renamed makers get their own codes. - [Mccabe Francis J B2B](https://openairdocs.org/model/mccabe-francis-j-b2b): 1 registered aircraft, registry code 05603ZZ - [Buccaneer II B2B](https://openairdocs.org/model/buccaneer-ii-b2b): 0 registered aircraft, registry code 05902Z7 --- 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.