# NTSB IAD74AI044: Boeing 707, N788TW, Herndon, VA, February 16, 1974

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Closed
- Date: February 16, 1974
- Place: Herndon, VA · HERNDON, VA
- Location: 38.9704° N, 77.3871° W: Placed by OpenAirDocs: center of Herndon, VA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=38.9704&lon=-77.3871&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious, 1 minor, 50 uninjured
- Status: Completed, report November 19, 1974
- Report: Brief approved by the director
- NTSB case key (mKey): 187285
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=IAD74AI044
- Page: https://openairdocs.org/ntsb/IAD74AI044

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
1-0027  74/2/16  NR.HERNDON,VA         BOEING 707          CR-  0  1  6  SCHED INTERNATL PASSG SRV AIRLINE TRANSPORT, AGE
        TIME - 1705                    N788TW              PX-  0  0 45                            UNK/NR, UNK/NR TOTAL
                                       DAMAGE-MINOR        OT-  0  0  0                            HOURS, UNK/NR IN TYPE,
                                                                                                   INSTRUMENT RATED.
        OPERATOR - TRANS WORLD AIRLINES,INC.
        DEPARTURE POINT             INTENDED DESTINATION         LAST ENROUTE STOP
          PARIS,FRANCE                WASHINGTON,DC                NEW YORK,NY
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           FIRE OR EXPLOSION: IN FLIGHT                             LANDING: INITIAL APPROACH
        PROBABLE CAUSE(S)
           INSTRUMENTS/EQUIPMENT AND ACCESSORIES - MISCELLANEOUS EQUIPMENT: OTHER
           MISCELLANEOUS ACTS,CONDITIONS - EXCESSIVE PRESSURE
        FACTOR(S)
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: IMPROPER MAINTENANCE (MAINTENANCE PERSONNEL)
        REMARKS- #3 GALLEY COFFEE MAKER WATER HEATER FAILED TO CYCLE OFF,EXPLODED.NO PRESS RELIEF VALVE INSTALLED.
```

## Aircraft

- Registration: N788TW (not matched to a registry record)
- Reported make and model: BOEING 707
- Category: Airplane
- Engines: turbo fan
- Damage: Minor damage

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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