SERVICE LIFE POLICY COMPONENTS

                                     between

                               THE BOEING COMPANY

                                       and

                            American Trans Air, Inc.


           Supplemental Exhibit SLP1 to Purchase Agreement Number 2262



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                         SERVICE LIFE POLICY COMPONENTS

                                   relating to

                            BOEING MODEL 737 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. 2262.

1.           Wing.
             ----

     (a) Upper and lower skins and stiffeners  between the forward and rear wing
spars.

     (b) Wing spar webs, chords and stiffeners.

     (c) Inspar wing ribs.

     (d) Inspar splice plates and fittings.

     (e) Main landing gear support structure.

     (f) Wing center section floor beams,  lower beams and spanwise  beams,  but
not the seat tracks attached to floor beams.

     (g)  Engine  strut  support  fittings  attached  directly  to wing  primary
structure.

     (h) Wing-to-body structural attachments.

     (i) 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.

     (j) Trailing edge flap tracks and carriages.

     (k) Aileron  leading edge device and  trailing  edge flap  internal,  fixed
attachment and actuator support structure.



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2.           Body.
             ----

     (a) 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.

     (b)  Window  and  windshield   structure  but  excluding  the  windows  and
windshields.

     (c) 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.

     (d) Nose wheel well  structure,  including  the wheel well walls,  pressure
deck, bulkheads, and gear support structure.

     (e) Main gear wheel well structure including pressure deck and landing gear
beam support structure.

     (f) Floor beams and support  posts in the control cab and  passenger  cabin
area, but excluding seat tracks.

     (g) Forward and aft pressure bulkheads.

     (h) Keel  structure  between the wing front spar bulkhead and the main gear
wheel well aft bulkhead including splices.

     (i) Wing front and rear spar support bulkheads, and vertical and horizontal
stabilizer front and rear spar support bulkheads including terminal fittings but
excluding all system components and related installation and connecting devices,
insulation,  lining,  decorative panels and related  installation and connecting
devices.

     (j) Support  structure in the body for the stabilizer  pivot and stabilizer
screw.



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3.           Vertical Stabilizer.
             -------------------

     (a) External skins between front and rear spars.

     (b)  Front,  rear  and  auxiliary  spar  chords,  webs and  stiffeners  and
attachment fittings.

     (c) Inspar ribs.

     (d) Rudder hinges and supporting ribs, excluding bearings.

     (e)  Support  structure  in the  vertical  stabilizer  for  rudder  hinges,
reaction links and actuators.

     (f) Rudder internal, fixed attachment and actuator support structure.

4.           Horizontal Stabilizer.
             ---------------------

     (a) External skins between front and rear spars.

     (b) Front and rear spar chords, webs and stiffeners.

     (c) Inspar ribs.

     (d) Stabilizer center section including hinge and screw support structure.

     (e) Support structure in the horizontal stabilizer for the elevator hinges,
reaction links and actuators.

     (f) Elevator internal, fixed attachment and actuator support structure.

5.           Engine Strut.
             ------------

     (a) Strut external surface skin and doublers and stiffeners.

     (b) Internal strut chords, frames and bulkheads.

     (c) Strut to wing fittings and diagonal brace.

     (d) Engine mount support fittings  attached directly to strut structure and
including the engine-mounted support fittings.



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6.           Main Landing Gear.
             -----------------

     (a) Outer cylinder.

     (b) Inner cylinder, including axles.

     (c)  Upper  and lower  side  struts,  including  spindles,  universals  and
reaction links.

     (d) Drag strut.

     (e) Bell crank.

     (f) Orifice support tube.

     (g) Trunnion link.

     (h) Downlock links including spindles and universals.

     (i) Torsion links.

     (j) Actuator beam, support link and beam arm.

7.           Nose Landing Gear.
             -----------------

     (a) Outer cylinder.

     (b) Inner cylinder, including axles.

     (c) Orifice support tube.

     (d) Upper and lower drag strut, including lock links.

     (e) Steering plates and steering collars.

     (f) Torsion links.


     NOTE: The Service Life Policy does not cover any bearings, bolts, bushings,
clamps, brackets, actuating mechanisms or latching mechanisms used in or on
the Covered Components.