MACOM Commanders may authorize temporary exception from technical
bulletin (TB) requirements IAW AR 95-1, Chapter 6. Exception may only oc-
cur when combat operations or matter of life or death in civil disasters or
other emergencies are so urgent that they override the consequences of
continued aircraft operations.
1. PRIORITY CLASSIFICATION. NORMAL.
1.1. This TB provides information, instructions and authorization to implement the Preventive Maintenance
Daily (PMD), Preventive Maintenance Services 25 Hours/14 Days (PMS) and 500 Hours Phase Maintenance
(PM) and Special Inspection changes pending incorporation into the Technical Manuals for the AH-64 Series
2. END ITEMS AFFECTED. All AH-64 series aircraft.
3. REPORTING COMPLIANCE SUSPENSE DATE. Not applicable.
4. SUMMARY OF THE PROBLEM.
4.1. Background - The Apache Project Manager's Office, in agreement with the Aviation Engineering Direc-
torate and AMCOM IMMC, developed a Preventive Maintenance Daily (PMD), increased the Preventive
Maintenance Services (PMS) from 10 hours/14 days to 25 hours/14 days and increased the Phase Mainte-
nance (PM) Inspection schedule from 250 hours to 500 hours. After analysis and testing in select units, it has
been determined that utilizing the PMD, a 25 hours/14 days PMS along with the change to a 500 hour PM
Inspection interval will increase aircraft availability while reducing man-hour requirements without compro-
4.2. TB Purpose -
4.2.1. Implement a PMD after completion of the last flight of the mission day or prior to the first flight of the
4.2.2. Change from 10 hours/14 days to 25 hours/14 days Preventive Maintenance Service for all AH-64
4.2.3. Change from 250 hours to 500 hours Phase Maintenance Inspection interval for all AH-64 series
4.2.4. To list the new Special Inspections that will be added to TM 1-1520-238-23-1, Paragraph 1.137. and
TM 1-1520-Longbow/Apache SPECIAL INSPECTIONS. The list of 250 hours Special Inspections currently
on the 250/500 hour Phase Maintenance checklist to remain at 250 hours; will be transferred to the Special
Inspections checklist and DA Form 2408-18 (Equipment Inspection List).
5. IMPLEMENTATION PROCEDURES.
TM 1-1520-238-PMD, TM 1-1520-251-PMD, TM 1-1520-238-PMS, TM
1-1520-238-PM and TM 1-1520-251-PM are interchanged throughout this
TB. Use of the correct technical manual is dependent upon which airframe
is assigned to the unit.