FAA-listed STC holder

Steinbach & Associates, Inc. STCs

The Jun 30, 2026 FAA DRS snapshot lists 4 selected supplemental type certificates with status Current under Steinbach & Associates, Inc.. The records span 86 public aircraft directories and 1 modification categories. This is a research directory, not a claim that any specific kit or service is currently offered.

listed Current at snapshot

aircraft directories

modification categories

Mar 26, 2002

latest recorded revision

Recently revised records

Showing the 4 most recently revised records. Category directories provide the complete paginated discovery path.

4 displayed records.

Search every indexed record for this holder. The table below contains the recently revised records shown on this page.

Steinbach & Associates, Inc. supplemental type certificates, aircraft applicability, source status and dates
STC and modification	Aircraft / model / TC	Source status and dates	Holder and authority
SA09524SC Conversion of existing Piper air conditioning system from R12 to R134a refrigerant. Other aircraft modifications View record	Piper Aircraft PA-28-140TC 2A13 Piper Aircraft PA-28-161TC 2A13 Piper Aircraft PA-28-180TC 2A13 Piper Aircraft PA-28-181TC 2A13 Piper Aircraft PA-28-201TTC 2A13 Piper Aircraft PA-28-236TC 2A13 Piper Aircraft PA-28R-200TC 2A13 Piper Aircraft PA-28R-201TC 2A13 Piper Aircraft PA-28R-201TTC 2A13 Piper Aircraft PA-28RT-201TC 2A13 Piper Aircraft PA-28RT-201TTC 2A13 Piper Aircraft PA-31-300TC A20SO Piper Aircraft PA-31-325TC A20SO Piper Aircraft PA-31-350TC A20SO Piper Aircraft PA-31P-350TC A8EA Piper Aircraft PA-31PTC A8EA Piper Aircraft PA-32-300TC A3SO Piper Aircraft PA-32-301TC A3SO Piper Aircraft PA-32-301TTC A3SO Piper Aircraft PA-32R-300TC A3SO Piper Aircraft PA-32R-301 (HP)TC A3SO Piper Aircraft PA-32R-301 (SP)TC A3SO Piper Aircraft PA-32R-301TTC A3SO Piper Aircraft PA-32RT-300TC A3SO Piper Aircraft PA-32RT-300TTC A3SO Piper Aircraft PA-34-200TTC A7SO Piper Aircraft PA-34-220TTC A7SO Piper Aircraft PA-46-310PTC A25SO Piper Aircraft PA-46-350PTC A25SO	Current at cited snapshot Revised Mar 26, 2002 Application: Mar 2, 1998	FAA holder: Steinbach & Associates, Inc. FAA authority record
ST09524SC 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. Other aircraft modifications View record	New Piper Aircraft PA-28-180TC 2A13 New Piper Aircraft PA-28-161TC 2A13 New Piper Aircraft PA-28-181TC 2A13 New Piper Aircraft PA-28R-200TC 2A13 New Piper Aircraft PA-28R-201TC 2A13 New Piper Aircraft PA-28RT-201TC 2A13 New Piper Aircraft PA-28RT-201TTC 2A13 New Piper Aircraft PA-28-201TTC 2A13 New Piper Aircraft PA-28-236TC 2A13 New Piper Aircraft PA-28R-201TTC 2A13 New Piper Aircraft PA-28-140TC 2A13 New Piper Aircraft PA-31-300TC A20SO New Piper Aircraft PA-31-325TC A20SO New Piper Aircraft PA-31-350TC A20SO New Piper Aircraft PA-46-350PTC A25SO New Piper Aircraft PA-46-310PTC A25SO New Piper Aircraft PA-32R-301(SP)TC A3SO New Piper Aircraft PA-32-300TC A3SO New Piper Aircraft PA-32RT-300TTC A3SO New Piper Aircraft PA-32R-301(HP)TC A3SO New Piper Aircraft PA-32R-301TTC A3SO New Piper Aircraft PA-32-301TC A3SO New Piper Aircraft PA-32-301TTC A3SO New Piper Aircraft PA-32RT-300TC A3SO New Piper Aircraft PA-32R-300TC A3SO	Current at cited snapshot Revised Mar 28, 2000 Application: Not listed	FAA holder: Steinbach & Associates, Inc. FAA authority record
SA09472SC Modifications are only applicable to air conditioner systems. Other aircraft modifications View record	Cessna Aircraft 335TC 3A25 Cessna Aircraft 340TC 3A25 Cessna Aircraft 401TC A7CE Cessna Aircraft 402TC A7CE Cessna Aircraft 404TC A25CE Cessna Aircraft 414TC A7CE Cessna Aircraft 421TC A7CE Cessna Aircraft 425TC A7CE	Current at cited snapshot Revised Feb 14, 2000 Application: Sep 18, 1997	FAA holder: Steinbach & Associates, Inc. FAA authority record
ST09568SC Modification of existing refrigerant R12 air conditioning systems to convert them into refrigerant R134a systems on the aircraft identified above. Other aircraft modifications View record	Learjet Learjet 24TC A10CE Learjet Learjet 24FTC A10CE Learjet Learjet 24ETC A10CE Learjet Learjet 24D-ATC A10CE Learjet Learjet 24DTC A10CE Learjet Learjet 24CTC A10CE Learjet Learjet 24B-ATC A10CE Learjet Learjet 24ATC A10CE Learjet Learjet 25ATC A10CE Learjet Learjet 24BTC A10CE Learjet Learjet 31TC A10CE Learjet Learjet 24F-ATC A10CE Learjet Learjet 25TC A10CE Learjet Learjet 36ATC A10CE Learjet Learjet 36TC A10CE Learjet Learjet 35A (C-21A)TC A10CE Learjet Learjet 31ATC A10CE Learjet Learjet 29TC A10CE Learjet Learjet 28TC A10CE Learjet Learjet 25FTC A10CE Learjet Learjet 25CTC A10CE Learjet Learjet 25BTC A10CE Learjet Learjet 35TC A10CE Learjet Learjet 25DTC A10CE	Current at cited snapshot Revised Jan 10, 2000 Application: Not listed	FAA holder: Steinbach & Associates, Inc. FAA authority record

Steinbach & Associates, Inc. STCs

Modification mix

Aircraft represented

Recently revised records

Conversion of existing Piper air conditioning system from R12 to R134a refrigerant.

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.

Modifications are only applicable to air conditioner systems.

Modification of existing refrigerant R12 air conditioning systems to convert them into refrigerant R134a systems on the aircraft identified above.