# Incident 20140629012069I: Cessna 172N, Plymouth, MA, June 29, 2014

- Type: FAA incident report (Accident/Incident Data System), as reported
- Date: June 29, 2014, 12:00 local time
- Place: Plymouth, MA
- Airport: Plymouth Municipal Airport
- Damage: Minor damage
- Phase of flight: Other, Specify
- Operating rules: General operating rules (Part 91)
- Location: 41.9088° N, 70.7276° W: Placed by OpenAirDocs at PLYMOUTH MUNI (PYM), within about a mile (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=41.9088&lon=-70.7276&mi=10
- Aircraft: N738XA, registered now (https://openairdocs.org/aircraft/N738XA) (OpenAirDocs)
- Registry model: Cessna 172N (registry code 2072434, https://openairdocs.org/model/cessna-172n) (OpenAirDocs)
- Registry engine: Lycoming 0-320 series (registry code 41508, https://openairdocs.org/engine/lycoming-0-320-series) (OpenAirDocs)
- Reported make and model: CESSNA 172N
- Reported engine: LYCOMING 0-320 SERIES
- People aboard: 2
- Fatal injuries: 0
- Other injuries: 0
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20140629012069I

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

DURING POWER OFF STALL DEMONSTRATION, THE PLANE WAS SLOWED TO BELOW VFE, THE FLAPS WERE EXTENDED TO FULL (40 DEG).  A STALL WAS INDUCED AFTER WHICH THE NOSE WAS LOWERED AND FULL POWER WAS APPLIED, THE FLAPS WERE RETRACTED.  AS SOON AS THE FLAPS BEGAN TO RETRACT, A LOUD SNAP WAS HEARD AND THE AIRCRAFT BEGAN TO YAW TO THE LEFT.  IT WAS NOTED THAT THE LEFT HAND FLAP WAS NOT RETRACTING, SO FLAPS WERE SELECTED BACK DOWN AND THE AIRCRAFT RETURNED TO PYM AND LANDED WITHOUT FURTHER INCIDENT.

POST INCIDENT INSPECTION REVEALED THAT THE LEFT HAND FLAP CABLE (PART NUMBER 0510105-94)  HAD PULLED THROUGH THE LEFT HAND DRIVE PULLEY ASSEMBLY (PART NUMBER 0760612-7).

THE LEFT FLAP WAS DAMAGED DURING THIS INCIDENT CAUSING THE LEADING EDGE AND UPPER SURFACE ON THE OUTER 1/3 OF THE FLAP TO BE WRINKLED.  THE UPPER LEADING EDGE SKIN WAS ALSO TORN AROUND THE INBOARD ROLLER ATTACHMENT BRACKETS.

THE LEFT HAND DRIVE PULLEY WAS DAMAGED  AT THE ATTACHMENT CONTACT SURFACES FOR THE CABLE BY SPREADING THE UPPER AND LOWER PORTIONS OF THE DRIVE PULLEY SURFACES.

## Other reports on N738XA (1)

Matched to the same aircraft by N-number and date.

- [Incident 19991228039259I](https://openairdocs.org/incident/19991228039259I), Dec 28, 1999: Cessna 172N (N738XA), St Augustine, FL, Minor damage. Pilot stated that he over corrected on bounced landing causing damage to nose gear and striking prop.

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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