TB 1--1520--248--20--58
(3) Inspect remaining tailboom attachment fittings for condition and security.
e. Inspection of Aft Fuselage Frame --
(1) Inspect aft fuselage frame (P/N 206--032--308--103) for cracking.
(2) Inspection shall emphasize the outside bend radius of the frame in the upper right area (1 to 2 o'clock position looking
forward).
(3) If visual inspection reveals suspected cracks in aft fuselage frame, remove tailboom for access and verify cracks
with non--destructive inspection in accordance with TM 1--1520--266--23.
f. If no cracks are found and attachment areas are secure, install tailboom access panel and secure IR jammer mount
(reference Task 2--3--4, TM 1--1520--248--23--1). Inspection is complete and the red horizontal dash entry may be cleared.
Proceed to paragraph 9.b.
g. If cracks are found in tailboom intercostal assembly or aft fuselage frame, proceed to paragraph 9.
9. Correction Procedures
a. If cracks are found in tailboom intercostal assembly or aft fuselage frame, proceed as follows --
(1) If cracks are found in tailboom intercostal assembly, enter a red X status symbol on DA Form 2408--13--1 with the
following statement: "Tailboom intercostal assembly has crack at [Location]". Replace tailboom in accordance with Task
2--3--2, Task 2--3--8, TM 1--1520--248--23--1.
(2) If cracks are found in aft fuselage frame, enter a red X status symbol on the DA Form 2408--13--1 with the following
statement: "Aft fuselage frame has crack at [Location]". Contact local liaison engineer or maintenance engineering point of
contact in paragraph 16.b. for further instructions.
(3) Ensure report in accordance with paragraph 14.a.(2) is completed and forwarded.
b. Change/revise TM 1--1520--248--PPM as follows -- Perform PPM inspection 4.1 at PPM 3, 6, 9, 12, and 15.
c. During application of PPM inspection 4.1, emphasize two locations -- Inspection of the lower left tailboom attachment
fitting for cracks in rivet area between fitting and intercostal. Inspect for cracking in the aft fuselage frame in the upper right
area (1 to 2 o'clock position looking forward).
10. Supply/Parts and Disposition --
a. Parts Required -- Items cited in paragraphs 6 and 7 may be required to replace defective items.
b. Requisitioning Instructions -- Requisition replacement parts using normal supply procedures. All requisitions shall use
project code (CC 57--59) "X1H" .
NOTE
Project Code "X1H" is required to track and establish a data base of stock
fund expenditures incurred by the field as a result of message actions.
c. Bulk and Consumable Materials --
NOMENCLATURE
PART NUMBER
NSN
Screw (27 ea.)
MS27039--1--06
5305--00--912--7307
d. Disposition -- Dispose of removed parts/components using normal supply procedures. All turn--in documents must
include project code (CC 57--59) "X1H".
e. Disposition of Hazardous Material -- Not Applicable.
11. Special Tools and Fixtures Required -- As required.
12. Application --
a. Category of Maintenance -- AVUM. Aircraft downtime will be charged to AVUM maintenance. Report aircraft non--mis-
sion capable maintenance (NMCM) while undergoing inspection and correction in accordance with this message. Report
aircraft non--mission capable supply (NMCS) while waiting for parts in accordance with this message.
b. Estimated Time Required --
3
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