The FIELD AVIATION APU removal STC for the DHC-8 provides the operator with a procedure for removing the OEM Installed Hamilton Sundstrand T-62T-40C7B Auxiliary Power Unit.

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Replace 30E94-2 Sensing Element in Janitrol Valve 45E04-1 used on DHC-8 Oil Coolers 28E99-6 and 28E99-7 in accordance with Honeywell LORI Specification LR 0201-117 as reflected on Honeywell LORI Sealed Drawing List SDL3709-1, Revision A, dated 11 October 2005 or later FAA approved revision.

Replace core assembly of Janitrol Engine Oil Cooler, part number 28E99-3, -4, -6, and -7

Installation of a Sundstrand Turbomach T-62T-40C7B gas turbine auxiliary power unit with a Lear Siegler Model 23088-002 DC starter-generator.

Installation of Garrett 36-150W auxiliary power unit for ground use only.

De-Icer Boot Installation
Limitations: Installation of Aerazur Type 51 De-Ice Boots in accordance with Fields Aviation Company inc. Drawing List No. 33644; Issue 2Instructions for Continued Airworthiness Maintenance must be done in accordance with Fields Aviation Company inc.Maintenance Man (...)
Conditions: None.

Installation of Right Hand Ground Air
ConnectionTCCA STC C-LSA11-043/D, Issue
1
Limitations: OEM installed APU must be removed in accordance with EASA STC 10035887or TCCA STC SA98-30, Issue 3..
Conditions: Prior to installation of this modification it must be determined thatthe interrelationship between this modification and any other previouslyinstalled modification and/ or repair will introduce no adverse effectupon the airworthiness
of the product.

Retrofit of Honeywell 1152106-3 400 amp APU Starter Generator and Honeywell 1152108-6 Generator Control Unit.

Installation and maintenance of Aerazur Engine Inlet De-Icer Boot.

Installation of exhaust outlet.