NTSB Identification: LAX86LA031A.
The docket is stored on NTSB microfiche number 30061.
Accident occurred Sunday, November 03, 1985 in ANGWIN, CA
Aircraft: PIPER PA-28-181, registration: N21491
Injuries: 6 Uninjured.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

NEAR THE COMPLETION OF A DUAL INSTRUCTIONAL FLT WITH A PRE-SOLO STUDENT, THE CFI FOLLOWED THE PROCEDURES RECOMMENDED IN THE AIR & ANNOUNCED HIS CESSNA ACFT'S POSITION OVER THE CTAF STATING HIS INTENTIONS & IDENTIFYING HIS LOCATION ON THE 45 DEG, ENTRY & DOWNWIND LEGS. THE CFI FAILED TO TRANSMIT HIS POSITION ON THE FINAL APPROACH LEG, & FAILED TO OBSERVE A PIPER ACFT ON ITS TAKEOFF ROLL. THE PLT IN THE PIPER ACFT, WHO WAS PREPARING TO DEPART, FAILED TO ANNOUNCE HIS INTENTIONS & POSITION ON THE TAXIWAY/RWY. FAILED TO OBSERVE THE INBND CESSNA & RENCE FAILED TO GIVE THAT ACFT THE RIGHT-OF-WAY AS REQUIRED. AS THE PIPER WAS BEING ROTATED FOR TAKEOFF THE CESSNA DESCENDED ONTO & COLLIDED WITH IT. THE PIPER PLT ABORTED HIS TAKEOFF, & CESSNA LANDED WITHOUT FURTHER MISHAP. BOTH PLTS REPORTED THAT THE PRESENCE OF TALL TREES LOCATED ADJACENT TO THE RWY'S APPROACH HAD OBSTRUCTED THEIR VISION.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

RADIO COMMUNICATIONS..NOT USED..PILOT IN COMMAND

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

VISUAL LOOKOUT..NOT MAINTAINED..PILOT IN COMMAND

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

VFR PROCEDURES..IMPROPER..PILOT IN COMMAND

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