TB 1-2840-248-20-20
(1) Wholesale Stock. N/A.
(2) Retail Stock. Report receipt of this TB in accordance with paragraph 14c(2). Upon receipt of
this TB. commanders and others maintaining retail stock at installation level and below shall contact the sup-
ported aviation unit to perform the Inspection required by paragraph 8 and the correction procedures of para-
graph 9 on discrepant materiel. Disposition of discrepant materiel will be in accordance with paragraph 10.
Report compliance with this TB in accordance with paragraph 14d(2).
g. Components/Parts in Work (Depot Level and Others). Items listed in paragraphs 6 and 7 in work will
not be issued until compliance with this TB.
2.
Task/Inspection Suspense Date. Phase III yellow and blue engine harnesses do not require Inspec-
tion in accordance with this TB. Megger/test box inspection of phase 0, I, and II yellow and blue engine har-
nesses shall be accomplished as follows:
a. Aircraft with less than 50 hours to next 250 hour phase inspection may be inspected at next phase.
b. Aircraft with greater than 50 hours to next 250 hour phase inspection shall be inspected within 60 days.
c. Thereafter. this inspection shall be completed at every 250 hour phase lnspection interval until phase
III harneses are Installed.
3.
TB.
4.
Summary of the Problem.
a. The yellow and blue engine harnesses have been redesigned to make them moisture/fault resistant.
Implementation of this TB will minimize engine electrical system anomalies. The objective of identifying and
testing the phase 0, I. and II harnesses IS to replace them as quickly as practicable with the moisture resistant
phase III harnesses. Inspection of phase III harnesses is not required.
b. For manpower/downtime and funding impacts refer to paragraph 12.
c. The purpose of this TB is to:
(1) Provide Inspection criteria for yellow and blue engine harnesses for electrical insulation resist-
ance.
(2) Establish an inspection interval until phase 0, I, and II harnesses have been removed from
service.
(3) Provide guidance for identification and replacement of phase 0, I, and II design harnesses.
5.
End Items to be inspected. All AH-64 aircraft with T700-GE-701 engines installed.
6.
Assembly Components to be Inspected.
NOMENCLATURE
PART NUMBER
NATIONAL STOCK NUMBER
Engine Assembly
6044T06G01
2840-01-114-2211
2
