Flight Manual, Normal Operations. 101. Shutdown all test equipment and remove from aircraft. 2.6 Decals and Placards No. 1 TRANSPONDER (BOTTOM) I. PHI P/N PHID-1757, located on the avionics shelf in front of the #1 transponder. No. 2 TRANSPONDER (TOP) 2. PHI P/N P1110-1756, located on the avionics shelf in f