# NTSB SEA73FYC17: Bell 47D1, N112B, Portland, OR, February 2, 1973

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: February 2, 1973
- Place: Portland, OR · PORTLAND, OR
- Location: 45.5235° N, 122.6762° W: Placed by OpenAirDocs: center of Portland, OR, within about 7 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=45.5235&lon=-122.6762&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report April 10, 1973
- Report: Brief approved by the director
- NTSB case key (mKey): 170046
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA73FYC17
- Page: https://openairdocs.org/ntsb/SEA73FYC17

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0271   73/2/2    PORTLAND,OREG       BELL 47D1           CR-  0  0  1  NONCOMMERCIAL             COMMERCIAL, AGE 64, 4309
        TIME - 1335                    N112B               PX-  0  0  0  BUSINESS                  TOTAL HOURS, 49 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          GOODAT HELIPORT             LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLIDED WITH: BUILDING(S)                               LANDING: POWER-ON LANDING
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - MISJUDGED CLEARANCE
        REMARKS- TAIL ROTOR HIT BLDG DRG LDG ON TRAILER.
```

## Aircraft

- Registration: [N112B](https://openairdocs.org/deregistered/N112B-1991-03-25), registration cancelled 1991-03-25, S/N 47B32 (OpenAirDocs)
- Reported make and model: BELL 47D1
- Registry model: [Bell 47D1](https://openairdocs.org/model/bell-47d1) (registry code 1180802) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Substantial damage

## 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 19730202003449A](https://openairdocs.org/incident/19730202003449A), Feb 2, 1973: Bell 47D1, Portland, OR, Substantial damage. Tail rotor hit bldg drg ldg on trailer.

## Other investigations on N112B (2)

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.

- [NTSB DEN82FTI03](https://openairdocs.org/ntsb/DEN82FTI03), Oct 27, 1981: Bell 47D1 (N112B), Haugen, MT, substantial damage
- [NTSB OAK68A0045](https://openairdocs.org/ntsb/OAK68A0045), Nov 21, 1967: Bell 47D1 (N112B), Antioch, CA, substantial damage

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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