# Berkshire Mfg. CONCEPT 70 - Type: Aircraft model (FAA registry) - Registry code: 1240104 - Manufacturer (registry): BERKSHIRE MFG. CORP. - Model: CONCEPT 70 - Aircraft type: Glider - Category: Glider - Engines: None - Seats: 1 - Weight class: Up to 12,499 lb - Cruise speed: 45 mph - Certification: Not type certificated - Registered aircraft: 7 - Page: https://openairdocs.org/model/berkshire-mfg-concept-70 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. None matched. ## Registered aircraft (7) - [N22PM](https://openairdocs.org/aircraft/N22PM): [Ireland Robert C](https://openairdocs.org/faa-owner/IRELAND%20ROBERT%20C), [Mount Shasta, CA](https://openairdocs.org/faa-place/CA/Mount%20Shasta), S/N 9 - [N37CW](https://openairdocs.org/aircraft/N37CW): [Wagoner Mark D](https://openairdocs.org/faa-owner/WAGONER%20MARK%20D), [Corning, CA](https://openairdocs.org/faa-place/CA/Corning), built 1973, S/N 12 - [N382W](https://openairdocs.org/aircraft/N382W): [Jones J Philip Jr](https://openairdocs.org/faa-owner/JONES%20J%20PHILIP%20JR), [Truro, MA](https://openairdocs.org/faa-place/MA/Truro), built 1974, S/N 15 - [N81A](https://openairdocs.org/aircraft/N81A): [Rensel Daniel](https://openairdocs.org/faa-owner/RENSEL%20DANIEL), [Ashville, NY](https://openairdocs.org/faa-place/NY/Ashville), built 1973, S/N 10 - [N8BM](https://openairdocs.org/aircraft/N8BM): [Wheeler Shaun W](https://openairdocs.org/faa-owner/WHEELER%20SHAUN%20W), [Covington, TN](https://openairdocs.org/faa-place/TN/Covington), built 1973, S/N 8 - [N914RJ](https://openairdocs.org/aircraft/N914RJ): [Grand Lake Air Ventures LLC](https://openairdocs.org/faa-owner/GRAND%20LAKE%20AIR%20VENTURES%20LLC), [Celina, OH](https://openairdocs.org/faa-place/OH/Celina), S/N 0-02 - [N9990](https://openairdocs.org/aircraft/N9990): [Leonard Steven E](https://openairdocs.org/faa-owner/LEONARD%20STEVEN%20E), [Wichita, KS](https://openairdocs.org/faa-place/KS/Wichita), built 1974, S/N 16 ## NTSB investigations (8) 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 MIA96LA080](https://openairdocs.org/ntsb/MIA96LA080), Feb 20, 1996: Berkshire Concept 70 (N29BW), Boynton Beach, FL, destroyed. Probable cause: an engine loss of power and fire for undetermined reasons. - [NTSB MIA93LA150](https://openairdocs.org/ntsb/MIA93LA150), Jul 4, 1993: Berkshire Concept 70 (N29BW), Boynton Beach, FL, substantial damage. Probable cause: THE PILOT'S IMPROPER IN-FLIGHT PLANNING AND THE LACK OF ADEQUATE THERMAL LIFT. - [NTSB SEA92LA151](https://openairdocs.org/ntsb/SEA92LA151), Jul 12, 1992: Berkshire Mfg. Concept 70 (N382W), Ephrata, WA, substantial damage. Probable cause: INADEQUATE IN-FLIGHT PLANNING/DECISION. FACTORS TO THE ACCIDENT WERE: NO THERMAL LIFT AND ROUGH/UNEVEN TERRAIN. - [NTSB NYC83LA197](https://openairdocs.org/ntsb/NYC83LA197), Jul 28, 1983: Berkshire Concept 70 (N6BM), Fairfield, PA, substantial damage - [NTSB DEN76FTM07](https://openairdocs.org/ntsb/DEN76FTM07), Sep 20, 1975: Berkshire 70 (N4KX), Heber City, UT, destroyed - [NTSB MIA7LDKG11](https://openairdocs.org/ntsb/MIA7LDKG11), Aug 19, 1975: Berkshire C70 (N29BW), Cordele, GA, substantial damage - [NTSB DEN73AD053](https://openairdocs.org/ntsb/DEN73AD053), Jun 10, 1973: Berkshire C-70 (N10QT), Burns, WY, destroyed, 1 fatal - [NTSB OAK73FXQ04](https://openairdocs.org/ntsb/OAK73FXQ04), Jul 19, 1972: Concept 70 (N44CW), Minden, NV, destroyed ## FAA accident and incident reports (4) 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 19960220002219A](https://openairdocs.org/incident/19960220002219A), Feb 20, 1996: Amtr CONCEPT70 (N29BW), West Palm Beach, FL, Destroyed. Aircraft had inflight fire and pilot bailed out with a parachute, crashed in a remote area. (.4)the pilot stated that during cruise the engine began to lose… - [Accident 19930704025159A](https://openairdocs.org/incident/19930704025159A), Jul 4, 1993: Amtrbs CONCEPT70 (N29BW), Boynton Beach, FL, Substantial damage. High sink rate and no thermals after glider tow. Unable return to base. Landed on a dike and ground looped. - [Accident 19920712025049A](https://openairdocs.org/incident/19920712025049A), Jul 12, 1992: Amtrbs CONCEPT70 (N382W), Ephrata, WA, Substantial damage. Lacked thermals. Began return to airport but too low. Landed in tall grass field. Struck rock hidden in grass. - [Accident 19830728036629A](https://openairdocs.org/incident/19830728036629A), Jul 28, 1983: Amtrbs CONCEPT70 (N6BM), Fairfield, PA, Substantial damage. Glider encountered turbulence over trees on final approach for landing. Pilot turned off runway to avoid overshoot. ## The same model under other registry codes Amateur-built copies and renamed makers get their own codes. - [Clayton CONCEPT 70](https://openairdocs.org/model/clayton-concept-70): 1 registered aircraft, registry code 05647W4 - [Concept Sailplanes CONCEPT-70](https://openairdocs.org/model/concept-sailplanes-concept-70): 0 registered aircraft, registry code 0564770 - [Mclaughlin CONCEPT-70](https://openairdocs.org/model/mclaughlin-concept-70): 0 registered aircraft, registry code 0564781 --- 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.