# NTSB DEN76DTE12: Cessna 150, N7153S, Boulder, CO, August 7, 1975

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: August 7, 1975
- Place: Boulder, CO · BOULDER, CO
- Location: 40.0244° N, 105.2513° W: Placed by OpenAirDocs: center of Boulder, CO, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=40.0244&lon=-105.2513&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report September 12, 1975
- Report: Brief approved by the director
- NTSB case key (mKey): 149684
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN76DTE12
- Page: https://openairdocs.org/ntsb/DEN76DTE12

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2147   75/8/7    BOULDER,CO          CESSNA 150          CR-  0  0  1  INSTRUCTIONAL             STUDENT, AGE 28, 29 TOTAL
        TIME - 1500                    N7153S              PX-  0  0  0  TRAINING                  HOURS, ALL IN TYPE, NOT
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            INSTRUMENT RATED.
        NAME OF AIRPORT - BOULDER MUNI
        DEPARTURE POINT             INTENDED DESTINATION
          BROOMFIELD,CO               BOULDER,CO
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           GROUND-WATER LOOP-SWERVE                                 LANDING: ROLL
           NOSE OVER/DOWN                                           LANDING: ROLL
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - IMPROPER OPERATION OF FLIGHT CONTROLS
           WEATHER - SUDDEN WINDSHIFT
        WEATHER BRIEFING - NO RECORD OF BRIEFING RECEIVED
        WEATHER FORECAST - UNKNOWN/NOT REPORTED
        SKY CONDITION                                            CEILING AT ACCIDENT SITE
          SCATTERED                                                UNLIMITED
        VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE
          5 OR OVER(UNLIMITED)                                     NONE
        OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  RELATIVE BEARING OF WIND
          NONE                                                     LEFT CROSS WIND 248-292 DEGREES
        TEMPERATURE-F                                            WIND VELOCITY-KNOTS
           90                                                       10
        TYPE OF WEATHER CONDITIONS                               TYPE OF FLIGHT PLAN
          VFR                                                      NONE
        REMARKS- HEADWIND OF 5-10KTS ON LDG CROSSWIND GUST TO 25KTS HIT ACFT DURING ROLL.ELEVATOR FULL UP ON ROLL.
```

## Aircraft

- Registration: [N7153S](https://openairdocs.org/deregistered/N7153S-1976-01-21), registration cancelled 1976-01-21, S/N 15067853 (OpenAirDocs)
- Reported make and model: CESSNA 150
- Registry model: [Cessna 150H](https://openairdocs.org/model/cessna-150h) (registry code 2071818) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Boulder Muni

## 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 19750807024829A](https://openairdocs.org/incident/19750807024829A), Aug 7, 1975: Cessna 150H, Boulder, CO, Substantial damage. Headwind of 5-10KTS on ldg crosswind gust to 25KTS hit acft during roll. Elevator full up on roll.

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.

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