Heard on a hot day at Luton a few years ago
PA28 was parked with door ajar on main concourse due to work in normal parking area. Had just been cleared taxi when the following exchange occured
737 : Luton ground, fyi, the little fellow next to us appears to have his door open .
Luton ground : G-xxxx Did you copy that ?
G-xxxx : Affirm. Please could you inform the big fellow next to us that he appears to have lost his propellors