# NTSB DEN70F0163: Beech D18S, N177V, Boulder, CO, December 23, 1969

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: December 23, 1969
- 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 May 28, 1970
- Report: Brief approved by the director
- NTSB case key (mKey): 145747
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN70F0163
- Page: https://openairdocs.org/ntsb/DEN70F0163

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-4575  69/12/23   BOULDER,COLO        BEECH D18S          CR-  0  0  1  MISCELLANEOUS             ATP,FLIGHT INSTR., AGE
        TIME - 1630                    N177V               PX-  0  0  0  FERRY                     42, 8284 TOTAL HOURS, 198
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            IN TYPE, INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - BOULDER
        DEPARTURE POINT             INTENDED DESTINATION
          KANSAS CTY,KANS             BOULDER,COLO
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           GROUND-WATER LOOP-SWERVE                                 LANDING: ROLL
           COLLIDED WITH: DITCHES                                   LANDING: ROLL
        PROBABLE CAUSE(S)
           AIRFRAME - LANDING GEAR: BRAKING SYSTEM (NORMAL SYSTEM)
           MISCELLANEOUS ACTS,CONDITIONS - HYDRAULIC FAILURE
           MISCELLANEOUS ACTS,CONDITIONS - LEAK/LEAKAGE
           MISCELLANEOUS ACTS,CONDITIONS - PRESSURE TOO LOW
        REMARKS- MASTER CYL LEAKED IN L BRAKE SYS.
```

## Aircraft

- Registration: N177V (not matched to a registry record)
- Reported make and model: BEECH D18S
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Boulder

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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