# NTSB IAD71II042: Boeing 747, N731PA, Washington, DC, December 30, 1970

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Closed
- Date: December 30, 1970
- Place: Washington, DC · WASHINGTON, DC
- Location: 38.8951° N, 77.0364° W: Placed by OpenAirDocs: center of Washington, DC, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=38.8951&lon=-77.0364&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 228 uninjured
- Status: Completed, report March 30, 1971
- Report: Brief approved by the director
- NTSB case key (mKey): 159503
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=IAD71II042
- Page: https://openairdocs.org/ntsb/IAD71II042

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
4-0068  70/12/30   WASHINGTON,DC       BOEING 747          CR-  0  0 15  SCHED INTERNATL PASSG SRV CERTIFICATE UNKNOWN, AGE
        TIME - 0900                    N731PA              PX-  0  0213                            UNK/NR, UNK/NR TOTAL
                                       DAMAGE-MINOR        OT-  0  0  0                            HOURS, UNK/NR IN TYPE,
                                                                                                   UNK/NR INSTRUMENT RATED.
        CLASSIFIED AS INCIDENT
        NAME OF AIRPORT - DULLES INTL
        OPERATOR - PAN AMERICAN WORLD AIRWAYS,INC.
        DEPARTURE POINT             INTENDED DESTINATION
          JFK INTL ARPT,NY            SAN JUAN,PR
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           MISCELLANEOUS                                            IN FLIGHT: NORMAL CRUISE
        PROBABLE CAUSE(S)
           AIRFRAME - FUSELAGE: WINDSHIELDS,WINDOWS,CANOPIES
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - OVERLOAD FAILURE
        EMERGENCY CIRCUMSTANCES - PRECAUTIONARY LANDING ON AIRPORT
                                  SUSPECTED OR KNOWN AIRCRAFT DAMAGE
        REMARKS- 40 SQUARE INCHES OF OUTER LAYER OF R-1 WINDSHIELD SEPARATED. DIVERTED TO DULLES. LND OK.
```

## Aircraft

- Registration: N731PA (not matched to a registry record)
- Reported make and model: BOEING 747
- Category: Airplane
- Engines: turbo fan
- Damage: Minor damage
- Airport: Dulles Intl

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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