Individually Owned: 150,657
Corporate Owned: 137,281
Palm Beach County Glades Airport
Aircraft Accident/Incident Report
Pahokee, Florida 33476
Thursday, July 28, 2011 12:00 EDT
NTSB Narrative Summary Released at Completion of Accident
The flight instructor stated that, as the airplane climbed through about 500 feet above the ground after takeoff on the intended dual instructional cross-country flight, the engine started shaking, sputtering, and making “alarming” noises. The flight instructor took control of the airplane, noted nothing abnormal with the mixture, fuel selectors, engine instruments, or fuel quantity, and decided to return to the departure airport to land. The flight instructor noted that there was not a total loss of engine power, but it was not possible to maintain the airplane’s altitude. When the flight instructor realized that the airplane was too high and too fast to land on the intended runway, she moved the throttle to idle; however, she did not use flaps or slip the airplane to reach the runway. The airplane overflew the entire length of the runway, and the flight instructor elected to land the airplane in a lake on the left to avoid obstacles straight ahead and on the right. Postaccident examination of the engine revealed that the No. 3 cylinder exhaust valve head had sheared off at the stem. The stem, spring, and rocker arm were still intact, and the No. 3 piston exhibited signs of mechanical damage from the sheared head inside the combustion chamber. At the time of the accident, the engine had 2,229.5 hours of operation since major overhaul. The engine manufacturer's recommended time between overhauls was 2,000 hours.
NTSB Probable Cause Narrative
The flight instructor's misjudgment of the airplane's position and airspeed relative to the runway while returning to the airport after a partial loss of engine power. Contributing to the accident was the separation of the engine's No. 3 cylinder exhaust valve head from the stem, and the operator’s exceedence of the engine manufacturer's recommended time between overhauls.
Event Information
| Type of Event | Accident |
| Event Date | 7/28/2011 |
| Event Day of the Week | Thursday |
| Time of Event | 1200 |
| Event Time Zone | Eastern Daylight Time |
| Event City | Pahokee |
| Event State | FLORIDA |
| Event Country | -- |
| Zipcode of the event site | 33476 |
| Event Date Year | 2011 |
| Event Date Month | 7 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 264731N |
| Event Location Longitude | 0804207W |
| Event Location Airport | Palm Beach County Glades |
| Event Location Nearest Airport ID | PHK |
| Indicates whether the acc/inc occurred off or on an airport | Off Airport/Airstrip |
| Distance from airport in statute miles | 1 |
| Degrees magnetic from airport | -- |
| Airport Elevation | -- |
| Weather Briefing Completeness | -- |
| Investigator's weather source | Pilot |
| Time of the weather observation | 1200 Eastern Daylight Time |
| Direction of event from weather observation facility (degrees) | -- |
| Weather Observation Facility ID | PHK |
| Elevation of weather observation facility | 16 |
| Distance of event from weather observation facility (units?) | -- |
| Time Zone of the weather observation | EDT |
| Lighting Conditions | Day |
| Lowest Ceiling Height | -- |
| Lowest Non-Ceiling Height | 2900 |
| Sky/Lowest/Cloud Conditions | Scattered |
| Sky Condition for Lowest Ceiling | None |
| Visibility Runway Visual Range (Feet) | -- |
| Visibility Runway Visual Value (Statute Miles) | -- |
| Visibility (Statute Miles) | 10 |
| Air Temperature at event time (in degrees celsius) | 34 |
| Dew Point at event time (in degress fahrenheit) | 24 |
| Wind Direction (degrees magnetic) | 100 |
| Variable Wind Indicator | Wind direction could be determined |
| Wind Speed (knots) | 10 |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | Gusting |
| Wind Gust (knots) | 19 |
| Altimeter Setting at event time (in. Hg) | 29.98 |
| Density Altitude (feet) | -- |
| Intensity of Precipitation | -- |
| METAR weather report | -- |
| Event Highest Injury | Minor |
| On Ground, Fatal Injuries | -- |
| On Ground, Minor Injuries | -- |
| On Ground, Serious Injuries | -- |
| Injury Total Fatal | -- |
| Injury Total Minor | 1 |
| Injury Total None | 1 |
| Injury Total Serious | -- |
| Injury Total All | 1 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 29984 |
| NTSB Notification Source | FAA Southern ROC |
| NTSB Notification Date | -- |
| NTSB Notification Time | -- |
| Fiche Number and/or location -used to find docket information | -- |
| Date of most recent change to record | Jun 14 2012 3:28PM |
| User who most recently changed record | kenj |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N1443U |
| NTSB Number | ERA11LA429 |
| Missing Aircraft Indicator | -- |
| Federal Aviation Reg. Part | Part 91: General Aviation |
| Type of Flight Plan filed | None |
| Flight plan Was Activated? | No |
| Damage | Substantial |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | CESSNA |
| Aircraft Model | 172M |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | 17267110 |
| Certified Max Gross Weight | 2300 |
| Aircraft Category | Airplane |
| Aircraft Registration Class | -- |
| Aircraft is a homebuilt? | No |
| Flight Crew Seats | 2 |
| Cabin Crew Seats | -- |
| Passenger Seats | -- |
| Total number of seats on the aircraft | 4 |
| Number of Engines | 1 |
| Fixed gear or retractable gear | Fixed |
| Aircraft, Type of Last Inspection | 100 Hour |
| Date of Last Inspection | Jul 21 2011 12:00AM |
| Airframe hours since last inspection | 18 |
| Airframe Hours | 6585 |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | No |
| ELT Type | Unknown |
| Aircraft Owner Name | ATP AIRCRAFT 2 LLC |
| Aircraft Owner Street Address | 2711 CENTERVILLE RD STE 400 |
| Aircraft Owner City | WILMINGTON |
| Aircraft Owner State | DE |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 19808-1645 |
| Operator is an individual? | No |
| Operator Name | ATP AIRCRAFT 2 LLC |
| Operator Same as Owner? | Yes |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | Yes |
| Operator Street Address | 2711 CENTERVILLE RD STE 400 |
| Operator City | WILMINGTON |
| Operator State | DE |
| Operator Country | USA |
| Operator Zip code | 19808-1645 |
| Operator Code | -- |
| Owner has at least one certificate | None |
| Other Operator of large aircraft? | No |
| Certified for Part 133 or 137 Operation | -- |
| Operator Certificate Number | -- |
| Indicates whether an air carrier operation was scheduled or not | -- |
| Indicates Domestic or International Flight | -- |
| Operator carrying Pax/Cargo/Mail | -- |
| Type of Flying (Per_Bus / Primary) | Instructional |
| Second Pilot on Board | Yes |
| Departure Point Same as Event | Yes |
| Departure Airport Code | PHK |
| Departure City | Pahokee |
| Departure State | FL |
| Departure Country | USA |
| Departure Time | 1215 |
| Departure Time Zone | EDT |
| Destination Same as Local Flt | -- |
| Destination Airport Code | FXE |
| Destination City | Ft. Lauderdale |
| Destination State | FL |
| Destination Country | USA |
| Specific Phase of Flight | -- |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Jun 14 2012 3:28PM |
| User who most recently changed record | kenj |
| Since inspection or accident | Last Inspection |
| Event Location Runway Number and Location | N/A |
| Runway Length | -- |
| Runway Width | -- |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |