Narrative:

At XA45 local, I issued takeoff clearance to cessna (nga X). She acknowledged the clearance. This was the last communications I had with this aircraft. After numerous attempts to raise the aircraft, phx departure control established contact 5 mi off the departure end of the runway. During this NORDO period, all departures off both runways were held and delayed. Departure control turned the aircraft sbound out of the class B airspace and terminated radar service. I observed this and the target turned eastbound. When approximately 5 mi south of the airport at 2800 ft MSL the aircraft turned nebound through the class B airspace. An inbound aircraft from the south overflew the target at 3000 ft MSL. Approach control issued the traffic prior to switching him to my frequency. At this point the NORDO aircraft flew direct to runway 4 at falcon field, an airport approximately 14 NM east of phx. She descended to 1500 ft MSL, circled the tower twice and departed the area. At no time was this aircraft in communication with any ATC facility. This student pilot obviously did not understand lost communications procedures. Also worth mentioning, this same aircraft, and we believe same pilot, had problems trying to depart approximately 1 hour earlier. She had trouble gaining altitude and had to return immediately for landing. This airport is getting much too busy for student pilot activity. We cannot afford to give them the undivided attention they need.

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Original NASA ASRS Text

Title: LCL CTLR CLRED A C172 FOR TKOF ON TRAINING FLT. AFTER TKOF, THE PLT LEFT TWR FREQ WITHOUT ADVISING CTLR. LCL CTLR HELD ALL DEPS UNTIL WAS OUT OF AREA. THE ACFT WAS OBSERVED AGAIN PENETRATING CLASS B AIRSPACE WITHOUT CLRNC. RPTR BELIEVES THAT ARPT IS GETTING TOO BUSY FOR STUDENT PLT ACTIVITY.

Narrative: AT XA45 LCL, I ISSUED TKOF CLRNC TO CESSNA (NGA X). SHE ACKNOWLEDGED THE CLRNC. THIS WAS THE LAST COMS I HAD WITH THIS ACFT. AFTER NUMEROUS ATTEMPTS TO RAISE THE ACFT, PHX DEP CTL ESTABLISHED CONTACT 5 MI OFF THE DEP END OF THE RWY. DURING THIS NORDO PERIOD, ALL DEPS OFF BOTH RWYS WERE HELD AND DELAYED. DEP CTL TURNED THE ACFT SBOUND OUT OF THE CLASS B AIRSPACE AND TERMINATED RADAR SVC. I OBSERVED THIS AND THE TARGET TURNED EBOUND. WHEN APPROX 5 MI S OF THE ARPT AT 2800 FT MSL THE ACFT TURNED NEBOUND THROUGH THE CLASS B AIRSPACE. AN INBOUND ACFT FROM THE S OVERFLEW THE TARGET AT 3000 FT MSL. APCH CTL ISSUED THE TFC PRIOR TO SWITCHING HIM TO MY FREQ. AT THIS POINT THE NORDO ACFT FLEW DIRECT TO RWY 4 AT FALCON FIELD, AN ARPT APPROX 14 NM E OF PHX. SHE DSNDED TO 1500 FT MSL, CIRCLED THE TWR TWICE AND DEPARTED THE AREA. AT NO TIME WAS THIS ACFT IN COM WITH ANY ATC FACILITY. THIS STUDENT PLT OBVIOUSLY DID NOT UNDERSTAND LOST COMS PROCS. ALSO WORTH MENTIONING, THIS SAME ACFT, AND WE BELIEVE SAME PLT, HAD PROBS TRYING TO DEPART APPROX 1 HR EARLIER. SHE HAD TROUBLE GAINING ALT AND HAD TO RETURN IMMEDIATELY FOR LNDG. THIS ARPT IS GETTING MUCH TOO BUSY FOR STUDENT PLT ACTIVITY. WE CANNOT AFFORD TO GIVE THEM THE UNDIVIDED ATTN THEY NEED.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.