page 1 boeing proprietary service life policy components between the boeing company and allegiant air, llc supplemental exhibit slp1 to purchase agreement number pa - 05130 wje - pa - 05130 - slp1 page 2 boeing proprietary service life policy components relating to boeing models 737 - 8 - 200 and 737 - 7 aircraft this is the listing of slp components for the aircraft which relate to part 3, boeing service life policy of exhibit c, product assurance document to the agta and is a part of purchase agreement no. pa - 05130. 1. wing. ( i ) upper and lower wing skins and stiffeners between the forward and rear wing spars. ( ii ) wing spar webs, chords and stiffeners. ( iii ) inspar wing ribs. ( iv ) inspar splice plates and fittings. ( v ) main landing gear support structure. ( vi ) wing center section lower beams, spanwise beams and floor beams, but not the seat tracks attached to floor beams. ( vii ) wing - to - body structural attachments. ( viii ) engine strut support fittings attached directly to wing primary structure. ( ix ) support structure in the wing for spoilers and spoiler actuators ; for aileron hinges and reaction links ; and for leading edge devices and trailing edge flaps. ( x ) trailing edge flap tracks and carriages. ( xi ) aileron leading edge device and trailing edge flap internal, fixed attachment and actuator support structure. 2. body. ( i ) external surface skins and doublers, longitudinal stiffeners, longerons and circumferential rings and frames between the forward pressure bulkhead and the vertical stabilizer rear spar bulkhead and structural support and enclosure for the apu but excluding all system components and related installation and connecting devices, insulation, lining, and decorative panels and related installation and connecting devices. ( ii ) window and windshield structure but excluding the windows and windshields. wje - pa - 05130 - slp1 page 3 boeing proprietary ( iii ) fixed attachment structure of the passenger doors, cargo doors and emergency exits, excluding door mechanisms and movable hinge components. sills and frames around the body openings for the passenger doors, cargo doors and emergency exits, excluding scuff plates and pressure seals. ( iv ) nose wheel well structure, including the wheel well walls, pressure deck, bulkheads, and gear