# NTSB MIA66D0631: Cessna 150, N4108U, Humacao, PR, June 20, 1966

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: June 20, 1966
- Place: Humacao, PR · HUMACAO, PR
- Location: 18.1496° N, 65.8182° W: Placed by OpenAirDocs: center of Humacao, PR, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=18.1496&lon=-65.8182&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report August 18, 1966
- Report: Brief approved by the director
- NTSB case key (mKey): 170823
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA66D0631
- Page: https://openairdocs.org/ntsb/MIA66D0631

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1719  66/6/20    HUMACAO PR          CESSNA 150          CR-  0  0  2  INSTRUCTIONAL             COMMERCIAL, FL.INSTR.,
        TIME - 1730                    N4108U              PX-  0  0  0  DUAL                      AGE 42, 7764 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            585 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - HUMACAO
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           UNDERSHOOT                                               LANDING: FINAL APPROACH
           COLLIDED WITH: DITCHES                                   LANDING: FINAL APPROACH
        PROBABLE CAUSE(S)
           DUAL STUDENT - MISJUDGED DISTANCE AND ALTITUDE
           PILOT IN COMMAND - INADEQUATE SUPERVISION OF FLIGHT
        FACTOR(S)
           WEATHER - UNFAVORABLE WIND CONDITIONS
        SKY CONDITION                                            CEILING AT ACCIDENT SITE
          CLEAR                                                    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 QUARTERING HEAD WIND 293-337 DEGREES
        TEMPERATURE-F                                            WIND DIRECTION-DEGREES
           80                                                       60
        WIND VELOCITY-KNOTS                                      TYPE OF WEATHER CONDITIONS
           10                                                      VFR
        TYPE OF FLIGHT PLAN
          VFR
```

## Aircraft

- Registration: [N4108U](https://openairdocs.org/deregistered/N4108U-2018-03-23), registration cancelled 2018-03-23, S/N 15060108, built 1963 (OpenAirDocs)
- Reported make and model: CESSNA 150
- Registry model: [Cessna 150D](https://openairdocs.org/model/cessna-150d) (registry code 2071810) (OpenAirDocs)
- Registry engine: [Continental 0-200 series](https://openairdocs.org/engine/continental-0-200-series) (registry code 17020, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Humacao

## Other investigations on N4108U (1)

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 MIA68F0415](https://openairdocs.org/ntsb/MIA68F0415), Jan 19, 1968: Cessna 150 (N4108U), Humacao, PR, 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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