# NTSB OAK75AP035: British AC 1-11, N711ST, So Lake Tahoe, CA, February 9, 1975

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Closed
- Date: February 9, 1975
- Place: So Lake Tahoe, CA · SO LAKE TAHOE, CA
- Location: 38.9282° N, 119.9810° W: Placed by OpenAirDocs: center of South Lake Tahoe, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=38.9282&lon=-119.9810&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious, 5 minor, 38 uninjured
- Status: Completed, report June 26, 1975
- Report: Brief approved by the director
- NTSB case key (mKey): 148156
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK75AP035
- Page: https://openairdocs.org/ntsb/OAK75AP035

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1135   75/2/9    SO LAKE TAHOE,CA    BRITISH AC 1-11     CR-  0  0  6  NONCOMMERCIAL             COMMERCIAL, AGE 43, 6191
        TIME - 0956                    N711ST              PX-  0  1 37  CORP/EXEC                 TOTAL HOURS, 1014 IN
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            TYPE, INSTRUMENT RATED.
        NAME OF AIRPORT - LAKE TAHOE
        DEPARTURE POINT             INTENDED DESTINATION
          SO LAKE TAHOE,CA            DENVER,CO
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           GROUND-WATER LOOP-SWERVE                                 TAKEOFF: RUN
           COLLIDED WITH: SNOWBANK                                  TAKEOFF: RUN
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - INITIATED FLIGHT IN ADVERSE WEATHER CONDITIONS
           COPILOT - FAILED TO MAINTAIN DIRECTIONAL CONTROL
        FACTOR(S)
           PILOT IN COMMAND - MISUSED OR FAILED TO USE FLAPS
           PERSONNEL - AIRPORT SUPERVISORY PERSONNEL: IMPROPER/INADEQUATE SNOW REMOVAL
           AIRPORTS/AIRWAYS/FACILITIES - AIRPORT CONDITIONS: SNOW ON RUNWAY
           WEATHER - LOW CEILING
           WEATHER - SNOW
        WEATHER BRIEFING - BRIEFED BY FLIGHT SERVICE PERSONNEL, BY PHONE
        WEATHER FORECAST - FORECAST SUBSTANTIALLY CORRECT
        SKY CONDITION                                            CEILING AT ACCIDENT SITE
          OBSCURATION                                               100
        VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE
          1/4 MILE OR LESS                                         SNOW
        OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  RELATIVE BEARING OF WIND
          BLOWING SNOW                                             TAIL WIND 158-202 DEGREES
        TEMPERATURE-F                                            WIND DIRECTION-DEGREES
           31                                                      170
        WIND VELOCITY-KNOTS                                      TYPE OF WEATHER CONDITIONS
           7                                                       IFR
        TYPE OF FLIGHT PLAN
          IFR
        REMARKS- ATTMPTD TKOF FRM PARTIALLY CLRD RWY IN LOW VIS DUE HEAVY SNOW.HIT SNOW BERM & LOST CTL.
```

## Aircraft

- Registration: N711ST (not matched to a registry record)
- Reported make and model: BRITISH AC 1-11
- Category: Airplane
- Engines: turbo jet
- Damage: Substantial damage
- Airport: Lake Tahoe

## 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 19750209004399A](https://openairdocs.org/incident/19750209004399A), Feb 9, 1975: Bac 111401AK, So Lake Tahoe, CA, Substantial damage. Attmptd tkof frm partially clrd rwy in low vis due heavy snow. Hit snow berm & lost ctl.

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.

---
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.