Individually Owned: 150,657
Corporate Owned: 137,281
Phoenix Deer Valley Airport
Aircraft Accident/Incident Report
Phoenix, Arizona 85027
Saturday, November 24, 2012 8:00 MST
NTSB Narrative Summary Released at Completion of Accident
The pilot reported that he had not flown the airplane in over 3 months. He started the right engine on external power, unplugged the external power, and then started the left engine off of the airplane's electrical system, with the ammeter showing a normal charge rate. Immediately after takeoff and while the landing gear was being retracted, the airplane experienced a total electrical failure; all attempts to restore electrical power were unsuccessful. The pilot then performed the emergency landing gear extension procedure, which he said included pulling the landing gear transmission motor release lever and pushing the lever full forward. The pilot subsequently placed the emergency gear extension handle in the left socket because it was in the vertical position, which should have indicated to the pilot that the landing gear had not completely retracted and that the landing gear transmission motor's force was not disengaged. He then most likely secured the handle and rotated it forward to complete the gear extension; however, due to the electrical failure, he had no way of confirming that the landing gear was locked down. After relaying his situation to the departure airport's air traffic control tower, the pilot was cleared to land. Upon landing, the airplane's nose gear slowly collapsed, and then both main landing gear collapsed. The airplane subsequently slid off of the right side of the runway and came to rest in a rock-covered area, which resulted in substantial damage to the airplane. Although the electrical system could have been compromised due to the electrical load required during the landing gear retraction because of insufficient battery power, it could not be determined if this caused the electrical system anomaly. During the emergency landing gear extension procedure, the forward rotation of the landing gear handle in the left socket likely prevented it from reaching its full-forward travel to lock the gear down because the pilot likely failed to fully disengage the landing gear transmission motor's forces from the system.
NTSB Probable Cause Narrative
The pilot's failure to properly inhibit the landing gear transmission motor consistent with the emergency landing gear extension procedure, which precluded the full extension of the landing gear. Contributing to the accident was the airplane's electrical system anomaly, which rendered the gear position indicator inoperative.
Event Information
| Type of Event | Accident |
| Event Date | 11/24/2012 |
| Event Day of the Week | Saturday |
| Time of Event | 800 |
| Event Time Zone | Mountain Standard Time |
| Event City | Phoenix |
| Event State | ARIZONA |
| Event Country | -- |
| Zipcode of the event site | 85027 |
| Event Date Year | 2012 |
| Event Date Month | 11 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 334118N |
| Event Location Longitude | 1120457W |
| Event Location Airport | Phoenix Deer Valley |
| Event Location Nearest Airport ID | DVT |
| Indicates whether the acc/inc occurred off or on an airport | On Airport |
| Distance from airport in statute miles | 0 |
| Degrees magnetic from airport | -- |
| Airport Elevation | 1478 |
| Weather Briefing Completeness | -- |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 753 Mountain Standard Time |
| Direction of event from weather observation facility (degrees) | -- |
| Weather Observation Facility ID | DVT |
| Elevation of weather observation facility | 1478 |
| Distance of event from weather observation facility (units?) | 0 |
| Time Zone of the weather observation | MST |
| Lighting Conditions | Day |
| Lowest Ceiling Height | -- |
| Lowest Non-Ceiling Height | -- |
| Sky/Lowest/Cloud Conditions | Clear |
| 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) | 17 |
| Dew Point at event time (in degress fahrenheit) | -2 |
| Wind Direction (degrees magnetic) | -- |
| Variable Wind Indicator | -- |
| Wind Speed (knots) | -- |
| Wind Velocity Indicator | Calm |
| Wind Gust Indicator | -- |
| Wind Gust (knots) | -- |
| Altimeter Setting at event time (in. Hg) | 30.13 |
| Density Altitude (feet) | -- |
| Intensity of Precipitation | -- |
| METAR weather report | -- |
| Event Highest Injury | None |
| On Ground, Fatal Injuries | -- |
| On Ground, Minor Injuries | -- |
| On Ground, Serious Injuries | -- |
| Injury Total Fatal | -- |
| Injury Total Minor | -- |
| Injury Total None | 3 |
| Injury Total Serious | -- |
| Injury Total All | -- |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 32627 |
| NTSB Notification Source | LAX Regional Operations Center |
| NTSB Notification Date | -- |
| NTSB Notification Time | -- |
| Fiche Number and/or location -used to find docket information | -- |
| Date of most recent change to record | Apr 4 2014 1:41PM |
| User who most recently changed record | stam |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N8747Y |
| NTSB Number | WPR13LA060 |
| Missing Aircraft Indicator | -- |
| Federal Aviation Reg. Part | Part 91: General Aviation |
| Type of Flight Plan filed | None |
| Flight plan Was Activated? | -- |
| Damage | Substantial |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | PIPER |
| Aircraft Model | PA30 |
| Aircraft Series Identifier | NO SERIES |
| Aircraft Serial Number | 30-1902 |
| Certified Max Gross Weight | 3600 |
| Aircraft Category | Airplane |
| Aircraft Registration Class | -- |
| Aircraft is a homebuilt? | No |
| Flight Crew Seats | -- |
| Cabin Crew Seats | -- |
| Passenger Seats | -- |
| Total number of seats on the aircraft | 5 |
| Number of Engines | 2 |
| Fixed gear or retractable gear | Retractable |
| Aircraft, Type of Last Inspection | Annual |
| Date of Last Inspection | Jul 16 2012 12:00AM |
| Airframe hours since last inspection | 16 |
| Airframe Hours | 4410 |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | Unknown |
| ELT Type | Unknown |
| Aircraft Owner Name | Twin Comanche, LLC |
| Aircraft Owner Street Address | -- |
| Aircraft Owner City | Scottsdale |
| Aircraft Owner State | AZ |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 85255 |
| Operator is an individual? | Yes |
| Operator Name | Marvin M. Ange |
| Operator Same as Owner? | No |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | No |
| Operator Street Address | -- |
| Operator City | Scottsdale |
| Operator State | AZ |
| Operator Country | USA |
| Operator Zip code | 85255 |
| Operator Code | -- |
| Owner has at least one certificate | None |
| Other Operator of large aircraft? | -- |
| 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) | Personal |
| Second Pilot on Board | No |
| Departure Point Same as Event | No |
| Departure Airport Code | DVT |
| Departure City | Phoenix |
| Departure State | AZ |
| Departure Country | USA |
| Departure Time | 730 |
| Departure Time Zone | MST |
| Destination Same as Local Flt | dest & departure same, accident can occur anywhere |
| Destination Airport Code | DVT |
| Destination City | Phoenix |
| Destination State | AZ |
| Destination Country | USA |
| Specific Phase of Flight | -- |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Jan 29 2014 1:06PM |
| User who most recently changed record | litt |
| Since inspection or accident | Time of Accident |
| Event Location Runway Number and Location | 07L |
| Runway Length | 4499 |
| Runway Width | 75 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |