An instructor pilot took evasive action from a bonanza whose pilot was making intermittent traffic c...

Narrative:

While practicing instrument approaches at casa grande (cgz) airport; my students and I were operating under the guidelines set forth by the arizona flight training workgroup regarding making frequent position reports; requesting the 'top of stack' at the stanfield (tfd) VORTAC; and entering the approach in the prescribed manner. Unfortunately; there was a bonanza operating in the area. The pilot in command of this aircraft was apparently unaware of the recommended procedures; or didn't care. His radio calls were infrequent; and usually after he heard someone else was already in the location where he was heading. As my student and I approached tfd; I called and determined that there was no aircraft at the VOR; and entered the procedure turn hold at 3;500 ft. The pilot of the bonanza called that he was on a one mile final for the GPS approach to runway 23 at cgz. (This was the only call this pilot made on the entire approach). My student began the procedure turn inbound for the ILS runway 5 approach into cgz; and I reported that we were; 'procedure turn inbound at stanfield VOR at 3;500 ft.' just as we approached the VOR; I was about to report that we were 'VOR inbound' on the approach; the same bonanza passed overhead approximately 100 ft higher than us. At no point did this pilot make any radio call that he was approaching the tfd VOR; let alone request traffic information. Upon spotting the bonanza; I took immediate control of the aircraft; and pushed into a sharp dive for about 300 ft. In an admittedly unprofessional move; I screamed over the radio that we 'were over the tfd VOR at 3;500 ft and that 'someone' just passed over us at the same altitude.' again; there was no call from this bonanza until two minutes later when he reported that he was 'procedure turn inbound for the ILS approach.' in the future; if I detect a pilot who seems determine to not follow the outlined procedures in this area; I will declare the airspace unsafe and vector my students to another aerodrome for exercises. I did file a company safety report on this event. Unfortunately; the pilot of the bonanza in question never used his full call sign. During the infrequent calls that he did make; he simply referred to himself as 'bonanza-xx.'

Original NASA ASRS Text

Title: An Instructor pilot took evasive action from a Bonanza whose pilot was making intermittent traffic calls as both aircraft were doing practice approaches at CGZ.

Narrative: While practicing instrument approaches at Casa Grande (CGZ) airport; my students and I were operating under the guidelines set forth by the Arizona Flight Training Workgroup regarding making frequent position reports; requesting the 'Top of Stack' at the Stanfield (TFD) VORTAC; and entering the approach in the prescribed manner. Unfortunately; there was a Bonanza operating in the area. The pilot in command of this aircraft was apparently unaware of the recommended procedures; or didn't care. His radio calls were infrequent; and usually after he heard someone else was already in the location where he was heading. As my student and I approached TFD; I called and determined that there was no aircraft at the VOR; and entered the procedure turn hold at 3;500 FT. The pilot of the Bonanza called that he was on a one mile final for the GPS approach to Runway 23 at CGZ. (This was the only call this pilot made on the entire approach). My student began the procedure turn inbound for the ILS Runway 5 approach into CGZ; and I reported that we were; 'Procedure turn inbound at Stanfield VOR at 3;500 FT.' Just as we approached the VOR; I was about to report that we were 'VOR Inbound' on the approach; the same Bonanza passed overhead approximately 100 FT higher than us. At no point did this pilot make any radio call that he was approaching the TFD VOR; let alone request traffic information. Upon spotting the Bonanza; I took immediate control of the aircraft; and pushed into a sharp dive for about 300 FT. In an admittedly unprofessional move; I screamed over the radio that we 'were over the TFD VOR at 3;500 FT and that 'someone' just passed over us at the same altitude.' Again; there was no call from this Bonanza until two minutes later when he reported that he was 'procedure turn inbound for the ILS approach.' In the future; if I detect a pilot who seems determine to not follow the outlined procedures in this area; I will declare the airspace unsafe and vector my students to another aerodrome for exercises. I did file a company safety report on this event. Unfortunately; the pilot of the Bonanza in question never used his full call sign. During the infrequent calls that he did make; he simply referred to himself as 'Bonanza-XX.'

Data retrieved from NASA's ASRS site as of July 2013 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.

Attributes
ACN	989983
Time
Date	201201
Local Time Of Day	0601-1200
Place
Locale Reference	CGZ.Airport
State Reference	AZ
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	PA-28 Cherokee/Archer/Dakota/Pillan/Warrior
Operating Under FAR Part	Part 91
Flight Phase	Initial Approach
Route In Use	None
Flight Plan	None
Aircraft 2
Make Model Name	Beechcraft Single Piston Undifferentiated or Other Model
Operating Under FAR Part	Part 91
Flight Phase	Initial Approach
Person 1
Function	Instructor Pilot Not Flying
Qualification	Flight Crew Flight Instructor Flight Crew Multiengine Flight Crew Instrument Flight Crew Commercial
Experience	Flight Crew Last 90 Days 300 Flight Crew Total 5500 Flight Crew Type 4000
Events
Anomaly	Conflict NMAC Deviation - Procedural Published Material / Policy
Miss Distance	Horizontal 0 Vertical 100

An instructor pilot took evasive action from a bonanza whose pilot was making intermittent traffic calls as both aircraft were doing practice approaches at cgz.