TM 10-1670-272-23&P 0005 00
MC1-1B/MC1-1E TROOP BACK PARACHUTE ASSEMBLY
PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS), INTRODUCTION
0005 00-1/(2 Blank)
GENERAL
The following describe PMCS procedures on the unit and direct support levels. The PMCS table has been
provided to ensure the MC1-1B/MC1-1E parachute is in proper operating condition, and ready for its
primary mission.
SCOPE
The following work packages (WP 0007 00 through WP 0042 00) contain maintenance procedures that
are the responsibility of the specified technician, as authorized by the Maintenance Allocation Chart
(MAC), and the Source, Maintenance, and Recoverability (SMR) coded items that are identified in the
Repair Parts and Special Tools List (RPSTL).
MAINTENANCE FUNCTIONS/PROCEDURES
Each of the mentioned work packages above identifies a maintenance function specified in the MAC. All
maintenance procedures required to complete a maintenance function are identified under “This task
covers:” in the order in which the work is most logically accomplished.
PARACHUTE REPACK INTERVAL
The MC1-1B/MC1-1E parachutes will be repacked at a scheduled interval to insure airworthiness. When
necessitated by climate/storage/use condition, the local airdrop equipment maintenance officer may
require more frequent repack intervals. In this regard, a major concern would be rapid fluctuations of
temperature (fluctuations around 32 degrees Fahrenheit, freezing point) sustained high or low
temperature, or high humidity and heavily polluted atmosphere. The MC1-1B/MC1-1E troop back
parachute assemblies will be repacked at a 120-day interval.
DROP TESTING CRITERIA
Drop-testing of the MC1-1B/MC1-1E troop back parachute assemblies consist of physically airdropping an
item from an aircraft in flight. The drop-test is used as a means of proving the serviceability of an item or
checking parachute rigger proficiency, and will only be performed under the supervision of qualified
parachute rigger personnel who satisfy the supervisory requirements outlined in AR 750-32. Drop-testing
will usually be conducted by an activity responsible for the inspection and maintenance of airdrop
equipment, which includes either parachute packing or airdrop load rigging. The criteria required to
accomplish a drop test is as follows:
1. To drop-test a troop-type personnel parachute, a qualified parachute rigger will jump the parachute
and the applicable type parachute will be released under conditions that are consistent with the
requirements for a personnel jump or equipment drop.
2. During the drop-test of any type parachute, the deployment of the parachute will be thoroughly
monitored and observed to detect any indication of malfunction or defect. A subsequent record of the
applicable parachute log record will be entered into the applicable log record using procedures outline
in WP 0003 00.
3. Any type of airdrop equipment that indicates evidence of malfunction/defect during, or after, a drop-
test will be disposed of as prescribed in WP 0009 00.
4. A personnel parachute that is considered to have contributed to the injury of an individual parachutist
(critical or fatal) will be disposed of in accordance with WP 0009 00, Equipment Disposition.
5. Airdrop equipment that does not reflect evidence of malfunction or defect upon completion of a drop-
test will be administered a technical/rigger-type inspection as outlined in WP 0009 00. If serviceable,
the item(s) may then remain in use.
END OF WORK PACKAGE
