Correction Procedures. - TB-1-1520-237-20-2250005

TB 1--1520--237--20--225

The recurring inspections of each main landing gear drag beam will occur as follows:

(1) Prior to each flight, to include pre--flight, through flights, and post flight, wipe clean the top and

bottom of left and right main landing gear drag beams within a 2 inch radius of drag beam jackpad bolt/tie

down.

(2) Check for cracks radiating from the jackpad bolt/tie down holes.

NOTE

No cracks allowed.

(3) f a crack is found or suspected:

(a) Enter a Red Horizontal Dash //--// status symbol on the DA Form 2408--13--1 with the fol-

lowing statement: "Fluorescent penetrant inspection required IAW TB 1--1520--237--20--225."

(b) Proceed to paragraph 8c.

f a crack is found or suspected:

(1) Perform a fluorescent penetrant inspection to confirm the existence of the crack.

(2) If the crack is confirmed, proceed to paragraph 9a.

(3) If a crack is not found after application of the fluorescent penetrant inspection, continue with

the inspection procedures IAW paragraph 8a or 8b as applicable.

d. At the next scheduled and each subsequent 90 day corrosion prevention inspection, apply corrosion

prevention compound (CPC) over the sealant.

Correction Procedures.

If cracks are found:

(1) Change status of aircraft to a Red //X//.

(2) Immediately remove aircraft weight off of that main landing gear.

(3) Replace discrepant drag beam IAW with normal TM procedures as modified IAW this mes-

sage.

b. If corrosion is found, clean/repair IAW TM 1--1520--237--23, para 3--3--1, or TM 1--1520--250--23,

para 3.1.3.

10. Supply/Parts and Disposition.

a. Parts required. In addition to the items listed in paragraph 7, the following may be required to replace

defective items.

NOMENCLATURE

PART NUMBER

NSN

Nut, Self--Locking

MS 21245L12

5310--00--419--0876

Packing with Retainer

NAS1523C12Y

5330--01--227--0458

b. Requisitioning instructions. Requisition replacement parts using normal supply procedures. All req-

uisitions shall use project code (CC 57--59) "X0C" (Xray--Zero--Charlie)

NOTE

Project code "X0C" is required to track and establish a data base of stock fund expenditures in-

curred by the field as a result of SOF actions.