Aircraft model · Glider · Glider · registry code 1240104

Manufacturer (registry)
BERKSHIRE MFG. CORP.
Model
CONCEPT 70
Registry code
1240104
Registered
7 aircraft
Type
Glider
Engines
None
Seats
1
Weight class
Up to 12,499 lb
Cruise speed
45 mph
Certification
Not type certificated

Model codes come from the FAA registry’s reference file. ADs are matched to them by model name and maker.

On this page

Aircraft by year built · 13

1972Registered nowDeregistered2026
Aircraft by the year they were built: 13 aircraft
19724
19735
19742
19791
19901

Airworthiness directives that may apply · 0

ADs whose products match this airframe model. Each AD’s applicability may narrow it by serial number, part number or configuration.

No ADs matched this model

Registered aircraft · 7

Query with SQL
duckdb -csv -c "SELECT n_number, serial_number, year_manufactured, status, registrant_name, registrant_city, registrant_state
  FROM 'https://openairdocs.org/data/latest/faa_aircraft_registration.parquet'
  WHERE aircraft_model_code IN ('1240104')
  ORDER BY n_number"

Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.

NTSB investigations · 8

Aircraft matched to this model through the registry, by N-number and event date, checked against the reported serial number, make and model.

First occurrence, 1982 to 2007

Of 4 cases with NTSB’s older coding, defined in its coding manual.

NTSB MIA96LA080Accident · No injuriesLimited investigationFinal reportBerkshire Concept 70 · Boynton Beach, FLan engine loss of power and fire for undetermined reasons.Feb 20, 1996 · N29BW · DestroyedNTSB MIA93LA150Accident · No injuriesLimited investigationFinal reportBerkshire Concept 70 · Boynton Beach, FLThe pilot's improper in-flight planning and the lack of adequate thermal lift.Jul 4, 1993 · N29BW · Substantial damageNTSB SEA92LA151Accident · No injuriesLimited investigationFinal reportBerkshire Mfg. Concept 70 · Ephrata, WAInadequate in-flight planning/decision. Factors to the accident were: no thermal lift and rough/uneven terrain.Jul 12, 1992 · N382W · Substantial damageNTSB NYC83LA197Accident · No injuriesLimited investigationFinal reportBerkshire Concept 70 · Fairfield, PADuring the apch, the plt encountered unfavorable wind conditions & the glider touched down long. In order to avoid an embankment beyond the end of the strip, the plt turned toward a parallel rwy overrun area. Subsequently, the left wing hit two 55 gal drums…Jul 28, 1983 · N6BM · Substantial damageNTSB DEN76FTM07Accident · Minor injuriesClosedBerkshire 70 · Heber City, UTSep 20, 1975 · N4KX · DestroyedNTSB MIA7LDKG11Accident · No injuriesClosedBerkshire C70 · Cordele, GAAug 19, 1975 · N29BW · Substantial damageNTSB DEN73AD053Accident · 1 fatalClosedBerkshire C-70 · Burns, WYJun 10, 1973 · N10QT · DestroyedNTSB OAK73FXQ04Accident · Minor injuriesClosedConcept 70 · Minden, NVJul 19, 1972 · N44CW · Destroyed
Query with SQL
duckdb -csv -c "SELECT c.\"ntsbNumber\", c.\"eventDate\", c.\"eventType\", c.\"eventCity\", c.\"eventStateOrRegion\", a.n_number, a.\"aircraftMake\", a.\"aircraftModel\", c.\"highestInjuryLevel\", c.\"totalFatal\", c.\"completionStatus\", c.report_url
  FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a JOIN 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c ON c.\"mKey\" = a.case_mkey
  WHERE a.aircraft_model_code IN ('1240104')
  ORDER BY c.\"eventDate\" DESC, c.\"ntsbNumber\" DESC"

Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.

FAA incident reports · 4

Matched to this model through the registry, by N-number and event date, checked against the reported make and model.

Query with SQL
duckdb -csv -c "SELECT report_number, event_date, event_type, city, state, aircraft_make, aircraft_model, aircraft_damage, fatal_injuries, n_number
  FROM 'https://openairdocs.org/data/latest/faa_incident_report.parquet'
  WHERE aircraft_model_code IN ('1240104')
  ORDER BY event_date DESC, report_number DESC"

Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.

Service difficulty reports

No reports name this modelGeneral aviation reporting is voluntary.

The same model under other registry codes

Amateur-built copies and renamed makers get their own codes.

Query with SQL
duckdb -csv -c "SELECT m.code, m.manufacturer, m.model, count(g.n_number) AS aircraft
  FROM 'https://openairdocs.org/data/latest/faa_aircraft_model.parquet' m LEFT JOIN 'https://openairdocs.org/data/latest/faa_aircraft_registration.parquet' g ON g.aircraft_model_code = m.code
  WHERE m.match_key = 'CONCEPT70' AND m.code NOT IN ('1240104')
  GROUP BY ALL
  ORDER BY aircraft DESC
  LIMIT 12"

Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.