# NTSB UNK66X0161: Boeing 720B, N3156, Los Mochis, Mexico, August 4, 1966

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Closed
- Date: August 4, 1966
- Place: Los Mochis, Mexico · LOS MOCHIS, Mexico
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious, 1 minor, 96 uninjured
- Status: Completed, report April 27, 1967
- Report: Brief approved by the director
- NTSB case key (mKey): 122335
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=UNK66X0161
- Page: https://openairdocs.org/ntsb/UNK66X0161

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
1-0025   66/8/4  NR.LOS MOCHIS MEX     BOEING 720B         CR-  0  0  7  SCHED INTERNATL PASSG SRV AIRLINE TRANSPORT, AGE
        TIME - 1410                    N3156               PX-  0  1 90                            56, UNK/NR TOTAL HOURS,
                                       DAMAGE-NONE         OT-  0  0  0                            UNK/NR IN TYPE, UNK/NR
                                                                                                   INSTRUMENT RATED.
        OPERATOR - WESTERN AIR LINES,INC.
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           TURBULENCE                                               IN FLIGHT: NORMAL CRUISE
        REMARKS- INVESTIGATION UNDER THE JURISDICTION OF THE GOVT OF MEXICO.
```

## Aircraft

- Registration: [N3156](https://openairdocs.org/deregistered/N3156-1979-03-29), registration cancelled 1979-03-29, S/N 18829 (OpenAirDocs)
- Reported make and model: BOEING 720B
- Registry model: [Boeing 720-047B](https://openairdocs.org/model/boeing-720-047b) (registry code 1383857) (OpenAirDocs)
- Category: Airplane
- Engines: turbo jet
- Damage: No damage

## Other investigations on N3156 (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 ANC70AA067](https://openairdocs.org/ntsb/ANC70AA067), Mar 28, 1970: Boeing 720B (N3156), Annette Isl, AK, 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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