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Other aircraft modifications

STC ST09524SC

FAA DRS lists ST09524SC as Current · Amended, held by Steinbach & Associates, Inc., for New Piper Aircraft PA-28-180, New Piper Aircraft PA-28-161, and New Piper Aircraft PA-28-181, and 22 more aircraft configurations. Recorded change: Piper conversion of air conditioning systems from using R12 to R134a refrigerant on aircraft models listed. For PA-31-300 s/n 31-660, 31-712 thru 31-900, 31-7300901& up. For PA-31-325 sns 31-7400990 & up. PA-31-350 sns, 31-5001& 31-5003, 31-7305005 up. Snapshot dated June 30, 2026.

FAA-listed holder
Steinbach & Associates, Inc.
Aircraft configurations
25
FAA revision date
FAA status
Current · Amended

Recorded modification

What the FAA record covers

Piper conversion of air conditioning systems from using R12 to R134a refrigerant on aircraft models listed. For PA-31-300 s/n 31-660, 31-712 thru 31-900, 31-7300901& up. For PA-31-325 sns 31-7400990 & up. PA-31-350 sns, 31-5001& 31-5003, 31-7305005 up.

ST09524SC 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: New Piper Aircraft PA-28-180, New Piper Aircraft PA-28-161, and New Piper Aircraft PA-28-181, and 22 more aircraft configurations. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

New Piper Aircraft PA-28-1802A13New Piper Aircraft PA-28-1612A13New Piper Aircraft PA-28-1812A13New Piper Aircraft PA-28R-2002A13New Piper Aircraft PA-28R-2012A13New Piper Aircraft PA-28RT-2012A13New Piper Aircraft PA-28RT-201T2A13New Piper Aircraft PA-28-201T2A13New Piper Aircraft PA-28-2362A13New Piper Aircraft PA-28R-201T2A13New Piper Aircraft PA-28-1402A13New Piper Aircraft PA-31-300A20SONew Piper Aircraft PA-31-325A20SONew Piper Aircraft PA-31-350A20SONew Piper Aircraft PA-46-350PA25SONew Piper Aircraft PA-46-310PA25SONew Piper Aircraft PA-32R-301(SP)A3SONew Piper Aircraft PA-32-300A3SONew Piper Aircraft PA-32RT-300TA3SONew Piper Aircraft PA-32R-301(HP)A3SONew Piper Aircraft PA-32R-301TA3SONew Piper Aircraft PA-32-301A3SONew Piper Aircraft PA-32-301TA3SONew Piper Aircraft PA-32RT-300A3SONew Piper Aircraft PA-32R-300A3SO

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact New Piper Aircraft PA-28-180 and New Piper Aircraft PA-28-161, and 23 more aircraft configurations model, serial range, and configuration?
  2. 02Which configuration, parts, installation data, limitations, and ICAs apply?
  3. 03Who can legally supply the design data, kit, instructions, and ICAs?
  4. 04What parts, labor, conformity, and return-to-service work are excluded?

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