# NTSB MIA74IM090: Boeing 737, N9044U, Birmingham, AL, May 5, 1974

- Type: NTSB incident investigation
- Classification: Incident · Minor injuries · Closed
- Date: May 5, 1974
- Place: Birmingham, AL · BIRMINGHAM, AL
- Location: 33.5207° N, 86.8025° W: Placed by OpenAirDocs: center of Birmingham, AL, within about 7 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=33.5207&lon=-86.8025&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor, 36 uninjured
- Status: Completed, report June 24, 1974
- Report: Brief approved by the director
- NTSB case key (mKey): 170214
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA74IM090
- Page: https://openairdocs.org/ntsb/MIA74IM090

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
4-0011   74/5/5    BIRMINGHAM,ALA      BOEING 737          CR-  0  0  6  SCHED DOM PASSG SRV       AIRLINE TRANSPORT, AGE
        TIME - 1527                    N9044U              PX-  0  0 31                            UNK/NR, UNK/NR TOTAL
                                       DAMAGE-MINOR        OT-  0  0  0                            HOURS, UNK/NR IN TYPE,
                                                                                                   INSTRUMENT RATED.
        CLASSIFIED AS INCIDENT
        NAME OF AIRPORT - BIRMINGHAM MUNI
        OPERATOR - UNITED AIR LINES,INC.
        DEPARTURE POINT             INTENDED DESTINATION
          ATLANTA,GA                  BIRMINGHAM,ALA
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           GROUND-WATER LOOP-SWERVE                                 LANDING: ROLL
           COLLIDED WITH: OBJECT                                    LANDING: ROLL
        PROBABLE CAUSE(S)
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: INADEQUATE MAINTENANCE AND INSPECTION
           SYSTEMS - HYDRAULIC SYSTEM: RESERVOIR,LINES,FITTINGS
           MISCELLANEOUS ACTS,CONDITIONS - CHAFED
           MISCELLANEOUS ACTS,CONDITIONS - HYDRAULIC FAILURE
           MISCELLANEOUS ACTS,CONDITIONS - THRUST REVERSAL-ASYMETRICAL
        REMARKS- HYD LINE,BOEING 65-44510-1291. R REVERSER FAILED TO DEPLOY. R MN WHL STRUCK VASI LT.
```

## Aircraft

- Registration: [N9044U](https://openairdocs.org/deregistered/N9044U-2013-06-14), registration cancelled 2013-06-14, S/N 19550, built 1968 (OpenAirDocs)
- Reported make and model: BOEING 737
- Registry model: [Boeing 737-222](https://openairdocs.org/model/boeing-737-222) (registry code 1384473) (OpenAirDocs)
- Registry engine: [Pratt & Whitney JT8D-9 series](https://openairdocs.org/engine/pratt-whitney-jt8d-9-series) (registry code 52048, turbo-jet) (OpenAirDocs)
- Category: Airplane
- Engines: turbo fan
- Damage: Minor damage
- Airport: Birmingham Muni

## Other investigations on N9044U (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 DEN90IA189](https://openairdocs.org/ntsb/DEN90IA189), Sep 19, 1990: Boeing 737-222 (N9044U), Denver, CO, incident, no damage. Probable cause: THE FAILURE OF THE FLIGHT CREW TO FOLLOW EMERGENCY PROCEDURES/DIRECTIVES. FACTORS WERE THE FAILURE OF THE AIRCRAFT ELECTRICAL SYSTEM (RELAYS) AND THE FAILURE OF THE COMPANY TO PROVIDE A JETWAY…

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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