GAO made covert calls to 45 fixed base operators at 40 airports and compared the answers to what those same businesses post online, finding fuel prices generally available and accurate within about 50 cents a gallon.
Required service fees, however, were often missing from FBO websites even when staff readily quoted them by phone.
Regulators reported no formal complaints or enforcement actions, and pilot groups said they were largely satisfied despite flagging gaps around event-based fees.
The full dispatch is available from the source below.