C-54 PHOTO FLIGHT PROCEDURES C-54 aircraft, coll signs Powter 1, 2, and 3, will ctll Boundary Tere on VHF Ghennel Cv:hon fifty (50) milcs out from bese, These aircraft will remain under the dircet control of Boundczry Tare on Channel C until completion of their missions, Boundiry Tare will have each aireraft check IFF equipment on 211 modes snd vector each Aircraft to its respective H Hour position as designated in Annex D, Each Powter aircraft will begin wind runs to achieve its proper H Hour position, maintaining a pressure altitude of 10,000 feet, Each Pewter aircraft will be required to make good its designated H Hour position with Boundary Tare providing only periodic time hacks end positioning information, This procedure will be follovied so that in the event of VHF radio failure just prior to H Hour, aircraft may still make good designated H Hour positions, Position tolerances are ¥# or - 15 seconds, Both Pewter and Boundary Tcre must hold radio conversation on Chamel C to an ebsolute minimum, Immediately follotring H Eoun Boundary Tare will provide Pewter aircraft with a steer for base and retain direct control of Pewter aircraft until they reach a point fifty (50) miles out from base at which time Dirty Face will assume direct ccntrol,