CSP−900RMM−2MD Helicopters, Inc.
Rotorcraft Maintenance Manual
Page 207
Revision 36
04-00-00
FAA Approved
NOTES:
(1) Life−limited components interchanged between models or configurations must be restricted to the lowest
service life indicated for the models or configurations affected. Life−limited components removed at
retirement are to be either overhauled, or placed in controlled storage until the life is extended, or
destroyed or conspicuously marked to prevent inadvertent return to service. Parts are applicable only on
models under which a service life is listed.
(2) Hours listed are flight hours unless otherwise noted.
(3) EASA AD 2013−0260−E, dated 25 October 2013, applies to the 900R310001−103 and 900R3100001−105
blade retention bolts.
(4) Ref. applicable manufacturer publications for mandatory component replacement requirements.
(5) Special inspections required at 50−hour and 100−hour intervals. Refer to MDHI Service Bulletin
SB900−001R5 or later, and to Section 05−20−10 for inspection requirements.
(6) Special inspections required at 100−hour and 1000−hour intervals. Ref. Section 05−20−10.
(7) Special inspection required every 500−hours. Ref. Section 05−20−10.
(8) 500N5311−5 Tension−Torsion Straps previously installed on MD900 helicopters are life−limited to 2,500
hours when installed on MD500N series helicopters.
(9) After 2,000 hours, the life of the Elastomeric Damping Spring is ‘‘On Condition” but requires performance
of a Special inspection every 100 hours thereafter until deterioration is sufficient to retire assembly. Ref.
Section 05−20−10.
(10) Special inspection required every 1,000−hours or 6 months, whichever comes first. Ref. Section 05−20−10.
(11) Aircraft Equipped with Autopilots
The 900C3010004−107 trim actuator assembly must be overhauled every 5000 hours.
Aircraft NOT Equipped with Autopilots
The 900C3010004−107 trim actuator assembly has no life−limit when installed in aircraft not equipped with
Autopilots.
(12) Life of damper may use 30,000 landings instead of 5,000 hours if aircraft logs landings. Operators who
have not logged landings can apply 6 landings per hour to determine life of part.
(13) Life limit is from date of manufacture stamped on the cartridge.
(14) Inspection required at 5,000 hours and at each subsequent 2,500 hours. Ref. Section 05−20−10.
(15) Special inspection required every 50−hours. Ref. Section 05−20−10.
(16) Special inspections required at 100−hour, 300−hour, and 1000−hour intervals. Ref. Section 05−20−10.
(17) Service life shown for the basic (no dash number) part numbers apply to all dash numbered versions
unless otherwise indicated.
(18) Part number 900R1103002−101 is part of 900R1103001−109.
Part number 900R1103003−101 is part of 900R1103001−111.
Part number 900R1103004−101 is part of 900R1103001−113.
Part number 900R1103005−101 is part of 900R1103001−115.
(19) Special inspections required at 1200−hour and subsequent 300−hour intervals. Ref. Section 05−20−10.
(20) Special inspection required every 1,000 hours. Ref. Section 05−20−10.
(21) The tension−torsion straps have a 5−year calendar life that starts the day the package is opened (ref.
Section 64−30−00). If the date the package was opened is unknown, the 5−year calendar life is based on
the manufacturing cure date.
For straps installed before 06 March 2008 on Model MD900 helicopters serial numbers 900−000008 thru
900−000123, the initial calendar replacement is based on the cure date on the strap. Refer to Table 1 to
find the expiration date.
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