# NTSB SEA73AS041: Glasflugel Libell, N273S, Choteau, MT, June 26, 1973

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Closed
- Date: June 26, 1973
- Place: Choteau, MT · CHOTEAU, MT
- Location: 47.8137° N, 112.1794° W: Placed by OpenAirDocs: center of Choteau, MT, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=47.8137&lon=-112.1794&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 1 fatal
- Status: Completed, report August 28, 1973
- Report: Brief approved by the director
- NTSB case key (mKey): 190097
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA73AS041
- Page: https://openairdocs.org/ntsb/SEA73AS041

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1911  73/6/26  NR.CHOTEAU,MONT       GLASFLUGEL LIBELL   CR-  1  0  0  NONCOMMERCIAL             COMMERCIAL, FL.INSTR.,
        TIME - 2037                    N273S               PX-  0  0  0  PLEASURE/PERSONAL TRANSP  AGE 29, 2021 TOTAL HOURS,
                                       DAMAGE-DESTROYED    OT-  0  0  0                            25 IN TYPE, NOT
                                                                                                   INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
         CHOTEAU,MONT                 LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           AIRFRAME FAILURE: IN FLIGHT                              IN FLIGHT: OTHER
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - INCAPACITATION
           MISCELLANEOUS ACTS,CONDITIONS - HYPOXIA
           PILOT IN COMMAND - EXCEEDED DESIGNED STRESS LIMITS OF AIRCRAFT
           MISCELLANEOUS ACTS,CONDITIONS - OVERLOAD FAILURE
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - SEPARATION IN FLIGHT
           SYSTEMS - OXYGEN SYSTEM: CREW SYSTEM
        REMARKS- HI ALT FLT TO 33500 FT MSL.ACFT DISINTEGRATED.GR & SPEED BRAKES RETRACTED.02 EQUIP OVHL 3 YR PRIOR
```

## Aircraft

- Registration: [N273S](https://openairdocs.org/deregistered/N273S-1973-10-01), registration cancelled 1973-10-01, S/N 21 (OpenAirDocs)
- Reported make and model: GLASFLUGEL LIBELL
- Registry model: [Glasflugel STANDARD LIBELLE](https://openairdocs.org/model/glasflugel-standard-libelle) (registry code 3800341) (OpenAirDocs)
- Category: Glider
- Engines: none
- Damage: Destroyed

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19730626021719A](https://openairdocs.org/incident/19730626021719A), Jun 26, 1973: Glasfl H301, Choteau, MT, Destroyed. Hi alt flt to 33500 ft MSL.acft disintegrated. Gr & speed brakes retracted.02 equip ovhl 3 yr prior

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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