Date: 201702
Local time of day: 0601-1200
Location: U77.Airport, UT
Aircraft: Small Aircraft; Low Wing; 1 Eng; Fixed Gear
Operator: Personal
Operating under: Part 91
Flight plan: VFR
Mission: Personal
Flight phase: Initial Approach
Airspace: Class G ZLC
ATC / advisory: CTAF U77
Second aircraft: Small Aircraft; Low Wing; 1 Eng; Fixed Gear
Reporter organization: Personal
Reporter function: Pilot Flying; Single Pilot
Reporter qualification: Flight Crew Private
Human factors: Confusion; Communication Breakdown; Distraction; Workload; Time Pressure; Situational Awareness
Anomaly: Airspace Violation All Types; Conflict Airborne Conflict; Deviation / Discrepancy - Procedural FAR; Deviation / Discrepancy - Procedural Published Material / Policy
Detector: Person Flight Crew
When detected: In-flight
Result: Flight Crew Became Reoriented; Flight Crew Took Evasive Action
Contributing factors: Airport; Human Factors; Procedure
Primary problem: Human Factors

Narrative: While on approach to U77 from 10nm out I began to make calls with the intention to land full stop. I made a total of 9 calls before the problem. There were no other aircraft announcing after the 2nd call and I was 5nm out at that point. When I got down to the call of approaching and about to enter a 45 for right downwind runway 30; a low wing aircraft pilot made a call that he was turning left crosswind runway 30 at pattern altitude. We saw him as he made a 120 degree turn into the crosswind and began exiting the pattern right into us. He violated right of way regulations. He was right in my face. He had not made a call of taxiing to the runway; entering the runway; departing etc.; nor did he call at all. Avoiding to the right would have been an inevitable collision. As he was not going to move to avoid. I had to bank left as he passed to my right. I hope his excuse is radio problems. In entering the left bank at low speed and low altitude I had to just barely enter PVU airspace - a steeper bank would have forced me into a stall and a dive. I didn't have time to contact the tower as I was very near a stall just avoiding the plane that almost hit me. It was only about 2-3 seconds that I would have even been in the airspace if it was even a measurable entry at all. I was also at an altitude below their pattern and 4.7nm from the airport. No one would have been anywhere near me and my guess is I was below their radar. Anyway I was able to monitor both U77 and PVU after I came out of the evasive maneuver. No one mentioned the near miss except me and the other pilot still would not reply to repeated attempts to contact him. He was also with an instructor. We know this because the [aircraft] that departed right after him would talk to us. I did not find an appropriate time to contact PVU tower as we turned back toward U77; because he was busy with the many student pilots directly in his pattern. No one was injured and there was no property damage. We located traffic immediately upon his delayed call and we avoided the collision without incurring additional risk to any other aircraft.




Synopsis: General Aviation pilot reported taking evasive action from a departing aircraft whose pilot was not complying with CTAF position reporting.