# NTSB UNK64X4106: Boeing B-720, N93141, Sacramento, CA, September 22, 1964

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: September 22, 1964
- Place: Sacramento, CA · SACRAMENTO, CA
- Location: 38.5816° N, 121.4944° W: Placed by OpenAirDocs: center of Sacramento, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=38.5816&lon=-121.4944&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 4 minor, 51 uninjured
- Status: Completed, report April 12, 1965
- Report: Brief approved by the director
- NTSB case key (mKey): 181587
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=UNK64X4106
- Page: https://openairdocs.org/ntsb/UNK64X4106

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
1-0063  64/9/22    SACRAMENTO CALIF    BOEING B-720        CR-  0  0  7  SCHED DOM PASSG SRV       AIRLINE TRANSPORT, AGE
        TIME - 1640                    N93141              PX-  0  0 48                            46, 21900 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            2500 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - SACRAMENTO MUNCIP
        OPERATOR - WESTERN AIR LINES,INC.
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           UNDERSHOOT                                               LANDING: LEVEL OFF/TOUCHDOWN
           GEAR COLLAPSED                                           LANDING: ROLL
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - MISJUDGED DISTANCE,SPEED,AND ALTITUDE
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - OVERLOAD FAILURE
        REMARKS- FLIGHT RECORDER INDICATED 3.72 G & 119 KTS AT LDG.  TRUNION RETAINING BOLTS FAILED DOUBLE SHEAR.
```

## Aircraft

- Registration: [N93141](https://openairdocs.org/deregistered/N93141-1969-09-25), registration cancelled 1969-09-25, S/N 18061 (OpenAirDocs)
- Reported make and model: BOEING B-720
- Registry model: [Boeing 720-047B](https://openairdocs.org/model/boeing-720-047b) (registry code 1383857) (OpenAirDocs)
- Category: Airplane
- Engines: turbo fan
- Damage: Substantial damage
- Airport: Sacramento Muncip

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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