# NTSB SEA70IS044: Boeing 747, N7470, Moses Lake, WA, May 24, 1970

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Closed
- Date: May 24, 1970
- Place: Moses Lake, WA · MOSES LAKE, WA
- Location: 47.1279° N, 119.2764° W: Placed by OpenAirDocs: center of Moses Lake, WA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=47.1279&lon=-119.2764&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 6 uninjured
- Status: Completed, report September 11, 1970
- Report: Brief approved by the director
- NTSB case key (mKey): 121665
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA70IS044
- Page: https://openairdocs.org/ntsb/SEA70IS044

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
5-0013  70/5/24    MOSES LAKE,WASH     BOEING 747          CR-  0  0  6  INSTRUCTIONAL             AIRLINE TRANSPORT, AGE
        TIME - 1520                    N7470               PX-  0  0  0  DUAL                      51, 14728 TOTAL HOURS,
                                       DAMAGE-MINOR        OT-  0  0  0                            109 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        CLASSIFIED AS INCIDENT
        NAME OF AIRPORT - GRANT COUNTY
        DEPARTURE POINT             INTENDED DESTINATION         LAST ENROUTE STOP
          SEATTLE,WASH                LOCAL                        MOSES LAKE,WASH
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           AIRFRAME FAILURE: IN FLIGHT                              LANDING: FINAL APPROACH
        PROBABLE CAUSE(S)
           AIRFRAME - FLIGHT CONTROL SURFACES: FLAP ASSEMBLIES
           MISCELLANEOUS ACTS,CONDITIONS - FATIGUE FRACTURE
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - SEPARATION IN FLIGHT
        EMERGENCY CIRCUMSTANCES - PRECAUTIONARY LANDING ON AIRPORT
                                  SUSPECTED OR KNOWN AIRCRAFT DAMAGE
                                  UNUSUAL NOISE
        REMARKS- INBOARD FLAPTRACK ASSY FOR R INBOARD FLAP FAILED AND SEPARATED IN FLT. CONT APCH,LND OK.
```

## Aircraft

- Registration: [N7470](https://openairdocs.org/aircraft/N7470), registered now, S/N 20235, built 1969 (OpenAirDocs)
- Reported make and model: BOEING 747
- Registry model: [Boeing 747-121](https://openairdocs.org/model/boeing-747-121) (registry code 138487A) (OpenAirDocs)
- Registry engine: [Pratt & Whitney JT9D series](https://openairdocs.org/engine/pratt-whitney-jt9d-series) (registry code 52054, turbo-fan) (OpenAirDocs)
- Category: Airplane
- Engines: turbo fan
- Damage: Minor damage
- Airport: Grant County

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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