TM 1-1520-238-23
5-17
5.2.
MAIN ROTOR BLADE REPAIR CRITERIA – continued
M04-2118-5
NOTES:
1.
DAMAGE EXCEEDING THESE LIMITS IS REPAIRABLE AT DEPOT ONLY.
2.
PROVIDED THAT CORE DAMAGE DOES NOT INTERFERE WITH TAB BENDING WHEN TRACKING BLADES.
3.
IF THERE IS A REASON TO SUSPECT THAT WATER IS PRESENT IN THE PIERCED AREA, X-RAY MAY BE USED FOR
DETERMINATION. IF WATER IS FOUND TO BE PRESENT, REPAIR AT DEPOT ONLY.
4.
REFER TO TM 1-1500-204-23 FOR REPAIR INSTRUCTIONS.
5.
ALL DIMENSIONS ARE IN INCHES.
6.
REPAIRS APPLY TO BOTH UPPER AND LOWER SURFACES.
AREA
TYPE OF
DAMAGE
REPAIR PARAGRAPH
TABLE 5-4. GLASS SKIN AREA REPAIR.
DENTS,
DEPRESSIONS
AND CREASES
HOLES
THROUGH SKIN
3 SQ. IN.
NONE
7 SQ. IN.
NONE
NONE
DENTS,
DEPRESSIONS
AND CREASES
HOLES
THROUGH SKIN
DENTS,
DEPRESSIONS
AND CREASES
HOLES
THROUGH SKIN
ALLOWABLE LIMITS
WITHOUT REPAIR
ALLOWABLE LIMITS
WITH REPAIR
12 SQ. IN.
0.25 DIA
OR SMALLER
25 SQ. IN.
0.25 DIA
OR SMALLER
0.25 DIA
OR SMALLER
5.5
5.5
5.5
3
4
3
4
3
4
2
2
1
3.50
STA
263
160.0
160.0 INCHES
SPANWISE
160.0 INCHES
SPANWISE
GO TO NEXT PAGE
