Small Aircraft
Flight Crew Commercial; Flight Crew Flight Instructor; Flight Crew Multiengine; Flight Crew Instrument
Flight Crew Last 90 Days 180; Flight Crew Total 1300; Flight Crew Type 900
Communication Breakdown
ATC Issue All Types; Airspace Violation All Types; Deviation / Discrepancy - Procedural Published Material / Policy
Air Traffic Control Issued Advisory / Alert; Flight Crew FLC complied w / Automation / Advisory
Chart Or Publication; Procedure; Airspace Structure
Student and instructor performing pattern training at GYH. GYH using Runway 23; left traffic. Student climbs to 1850 on downwind (TPA 1800 by LOA; not a published value in chart supplement). GMU Tower informs GYH Tower that student was flying at 1;900 (in reality it was only 1;850); and GYH Tower passes information along to aircraft. Upon returning to GMU; GMU informs of possible pilot deviation. Resulting follow up reveals GMU landing Runway 01 while GYH landing 23 creates potential conflict for IFR traffic separation. Student and instructor told of LOA regarding GYH TPA of 1;800 by GMU Tower. I suggest that this information (regarding airspace changes at GYH) be published either by NOTAM or reflected in FAA VFR sectionals and chart supplement. As it exists now; there would be no way for a pilot to know unless told directly by ATC.
Small aircraft instructor reported ATC informed of Tower LOA traffic pattern altitude which is not published or available on pilot resources.