TB1-1520-238-20-107
NOTE
Aircraft fuel cells will be full and pressurized prior to conducting this
inspection.
a. Safe helicopter in accordance with TM 1-1520-238-23 (Task 1.57) or the IETM.
b. Remove the pilot's seat to gain access to the fuel cell inspection panel.
c. Remove the access door panel under pilot's seat (P/N 7-31113683-31) in the pilot's floor to gain
visual access to the fuel cell restraint panels.
d. Using a flashlight and inspection mirror, while facing forward, look down and to the left and the right
under the bellcrank (only a small portion of the panel is visible) to determined which type of fuel cell restraint
panel is installed----"black polycarbonate" or yellow or green painted Kevlar.
e. If yellow or green painted Kevlar panels are installed in both panel locations, no further action is
required; the inspection is complete.
f.
If "black polycarbonate" panels are installed in one or both panel locations, refer to paragraph 9.
Correction Procedures.
a. If "black polycarbonate" panels are present and undamaged, reinstall the inspected panels. Enter
a red horizontal dash //--// on the DA Form 2408-13-1 with the following statement: "Inspect black polycarbo-
nate forward fuel cell restraint panels after every 50 flight hours, or every 90 days, whichever occurs first, IAW
TB 1-1520-238-20-107." Enter second red horizontal dash //--// on the DA Form 2408-13-1 with the following
statement: "Replace black polycarbonate forward fuel cell restraint panels with ones made of Kevlar at next
phase inspection IAW TB 1-1520-238-20-107." Report aircraft serial number and hours to next phase inspec-
b. If "black polycarbonate" panels are present and cracks, crazing, or deformation are visibly present,
change the aircraft condition status symbol on the DA Form 2408-13 to a red //X//. Enter a red //X// on the
DA Form 2408--13--1 with the following statement: "Forward fuel cell restraint panels damaged and must be
replaced prior to next flight, in accordance with TB 1-1520-238-20-107". Report aircraft serial number and
hours to next phase inspection to the logistical point of contact in paragraph 16b.
10. Supply/Parts and Disposition.
a. Parts Required. Items cited in paragraph 7 may be required to replace defective items.
b. Requisitioning Instructions. Contact the logistical point of contact in paragraph 16b for requisitioning
instructions.
c.
Bulk and Consumable Materials. N/A.
d. Disposition. Demilitarize/mutilate in accordance with TM 1-1520-328-23 any part/component which
does not meet the inspection criteria.
e. Disposition of Hazardous Material. Dispose of in accordance with EPA directives as implemented
by your servicing environmental coordinator (AR 200-1).
11. Special Tools, Jigs, and Fixtures Required. N/A.
a. Category of Maintenance. AVUM. Aircraft downtime will be charged to AVUM.
b. Time Required.
(1) Total of 10 man-hours using 2 people for inspection.
(2) Total of 5 hours downtime for one end item.
(3) Total time -- 24 man-hours to remove and replace fuel cell panels using 2 people.
3