TIME BETWEEN OVERHAUL (TBO) AND RETIREMENT LIFE ITEMS CHECK.
Prior to start of the applicable phased maintenance inspections and lubrication, a
check will be made of components and their remaining operating hours prior to removal. The latest issue of the aircrafts TM 1-1520-238-23 and DA Form 2408-16 shall
be referred to for a complete listing of components and their TBO and retirement life.
USING THE PHASED INSPECTION CHECKLIST.
a. A new checklist shall be used each time phased maintenance is due on the aircraft. This checklist is arranged such that it can be separated by area and
distributed to the maintenance crew.
(1) Space is provided on each checklist form for entering the following data:
(a) The number of the maintenance inspection being performed.
(b) Aircraft serial number.
(c) Date of inspection.
(d) Total hours. (Block provided for local use.)
(2) For each inspection item a column is provided for entering the following data:
(a) Status of the aircraft as the result of the inspection requirement.
(b) Aircraft fault and/or remarks indicated by the inspection requirement.
(c) Action taken to correct the fault.
(d) Initials of person performing the corrective action.
b. This checklist is formatted to eliminate the requirements to use DA Form 2404 as temporary records during phased inspections. Figures 1 thru 3 show examples
of methods used to make entries on the phased maintenance checklist forms and the use of supplemental sheets for continuation purposes. This checklist pertains
to all AH-64A helicopters and may, therefore, contain inspection requirements applicable to specific equipment not installed on individual aircraft. When this situation
is encountered, those requirements that are not applicable need not be performed.
c. A supplemental Checklist Sheet form (DA Form 4676-R) (figure 3, Sheet 2) provided at the end of Section I of this checklist is to be used for local reproduction.
Copies of this form will be used to write up faults, remarks, and corrective actions when additional space is required. These supplemental sheets will be used instead
of DA Form 2404 in the accomplishment of the phased maintenance inspections.
d. Faults and remarks on the DA Form 2408-13 and DA Form 2408-14 may be transcribed to this checklist at the discretion of the unit Maintenance Officer.
In the column headed Inspect Phase Nos. and adjacent to the sequence number of each inspection requirement, there will appear the word
ALL or a series of numbers. The word ALL indicates that inspection requirements shall be accomplished at each phase (or at every 250-hour interval of the
1000-hour cycle). The numbers represent the phase number at which that inspection requirement is to be accomplished. For example, if the numbers 2 and 4 are
shown, that inspection requirement is to be accomplished at phases 2 and 4 only (or at 500-hour interval). If only one number is indicated, then that inspection
requirement is accomplished at that phase (or at every 1000-hour interval). At the completion of phase 4, the cycle starts over again with Phase 1.