# NTSB IAD76II010: Piper PA-31, N66873, Baltimore, MD, August 27, 1975

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Closed
- Date: August 27, 1975
- Place: Baltimore, MD · BALTIMORE, MD
- Location: 39.2904° N, 76.6122° W: Placed by OpenAirDocs: center of Baltimore, MD, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=39.2904&lon=-76.6122&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 8 uninjured
- Status: Completed, report October 9, 1975
- Report: Brief approved by the director
- Safety recommendations: Yes
- NTSB case key (mKey): 80056
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=IAD76II010
- Page: https://openairdocs.org/ntsb/IAD76II010

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
5-0028  75/8/27    BALTIMORE,MD        PIPER PA-31         CR-  0  0  1  COMMERCIAL                AIRLINE TRANSPORT, AGE
        TIME - 1520                    N66873              PX-  0  0  7  AIR TAXI-PASSG            50, 15000 TOTAL HOURS,
                                       DAMAGE-NONE         OT-  0  0  0                            300 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        CLASSIFIED AS INCIDENT
        NAME OF AIRPORT - BALTIMORE WASH
        DEPARTURE POINT             INTENDED DESTINATION
          OCEAN CITY,MD               BALTIMORE,MD
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           AIRFRAME FAILURE: IN FLIGHT                              LANDING: FINAL APPROACH
        PROBABLE CAUSE(S)
           PERSONNEL - PRODUCTION-DESIGN-PERSONNEL: POOR/INADEQUATE DESIGN
           SYSTEMS - FLIGHT CONTROL SYSTEMS: WING FLAP CONTROL SYSTEM MECHANICAL
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING ON AIRPORT/SEAPLANE BASE/HELIPT.
                                  LATERAL CONTROL PROBLEM
        REMARKS- L FLAP TRANS PN 489-380 WORN IN DWN DRIVE AREA.FLAP LWRG SPEED CHNGD FM 150 TO 175 MPH.1966 DESIGN
```

## Aircraft

- Registration: [N66873](https://openairdocs.org/deregistered/N66873-2014-11-05), registration cancelled 2014-11-05, S/N 31-7405179, built 1974 (OpenAirDocs)
- Reported make and model: PIPER PA-31
- Registry model: [Piper PA-31-350](https://openairdocs.org/model/piper-pa-31-350) (registry code 7103110) (OpenAirDocs)
- Registry engine: [Lycoming TI0-540 series](https://openairdocs.org/engine/lycoming-ti0-540-series) (registry code 41533, turbo-prop) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: No damage
- Airport: Baltimore Wash

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19750827030839A](https://openairdocs.org/incident/19750827030839A), Aug 27, 1975: Piper PA31350, Baltimore, MD, Substantial damage. L flap trans pn 489-380 worn in dwn drive area. Flap lwrg speed chngd fm 150 to 175 mph.1966 design

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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