STC SH4909NM
FAA DRS lists SH4909NM as Current · Reissued, held by Cascade STC LLC, for MD Helicopters 369, MD Helicopters 369A, and MD Helicopters 369D, and 9 more aircraft configurations. Recorded change: Replace the aft engine compartment heat blanket with a stainless steel firewall. Snapshot dated June 30, 2026.
Recorded modification
What the FAA record covers
Replace the aft engine compartment heat blanket with a stainless steel firewall.
SH4909NM identifies the approval, recorded holder, named aircraft, and modification scope. It does not confirm kit availability, serial-number effectivity, data rights, price, or installation authority.
Applicability
Aircraft named in FAA DRS
Named aircraft: MD Helicopters 369, MD Helicopters 369A, and MD Helicopters 369D, and 9 more aircraft configurations. Confirm the approved model list, serial effectivity, configuration, and certificate revision.
Buyer checks
Confirm before sourcing
- 01Does it cover the exact MD Helicopters 369 and MD Helicopters 369A, and 10 more aircraft configurations model, serial range, and configuration?
- 02Which powerplant configuration, limits, instruments, and maintenance data apply?
- 03Who can legally supply the design data, kit, instructions, and ICAs?
- 04What parts, labor, conformity, and return-to-service work are excluded?
Related engine and powerplant STCs
Installation of CMI FADEC IOF-550 engine.
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Installation of a Kulite P/N APTE-130-1000-75G engine torque pressure transducer.
FAA holder: Benz Companies, Inc. a Texas Corp., dba Benz Airborne Systems
Modification of the Engine Mount Assembly.
FAA holder: Aerospace Welding Minneapolis Inc.
Replacement of the original Pratt and Whitney PT6A-114(A) engine and propeller with a Pratt and Whitney PT6A-42A and 4-blade Hartzell Propeller HC-E4N-3P/D9900(K) propeller or 3-blade Hartzell Propeller HC-B3TN-3AE(Y)/T10290N(K)+2, and associated equipment.
FAA holder: Blackhawk Modifications Inc.