# STCs that may be installed: Mcdonnell Douglas DC-9-81(MD-81)

A list on [Mcdonnell Douglas DC-9-81(MD-81)](https://openairdocs.org/model/mcdonnell-douglas-dc-9-81-md-81.md).

In force first, then newest. The registry doesn’t record which STCs an aircraft has.

Page 1 of 8 · 370 STCs

- [STC ST00885LA](https://openairdocs.org/stc/ST00885LA.md): Installation of fire extinguisher cartridges as replacements for Pacific Scientific fire extinguisher cartridges in fire extinguisher bottles. · AMETEK AMERON, LLC d/b/a MASS Systems
- [STC ST01649AT-D](https://openairdocs.org/stc/ST01649AT-D.md): Installation of Collins DLM-900 Acars system. · AIRCRAFT RECONFIG TECHNOLOGIES, LLC
- [STC ST01650AT-D](https://openairdocs.org/stc/ST01650AT-D.md): Installation of Collins VHF-900 Communication system. · AIRCRAFT RECONFIG TECHNOLOGIES, LLC
- [STC ST01765AT-D](https://openairdocs.org/stc/ST01765AT-D.md): Installation of Collins VHF-900 Communications System in a provisioned aircraft. · AIRCRAFT RECONFIG TECHNOLOGIES, LLC
- [STC ST01766AT-D](https://openairdocs.org/stc/ST01766AT-D.md): Installation of Collins DLM-900 ACARS system with a Miltope printer, in a provisioned aircraft. · AIRCRAFT RECONFIG TECHNOLOGIES, LLC
- [STC ST02463AT](https://openairdocs.org/stc/ST02463AT.md): Installation of an Intrusion/Penetration Resistance Flightdeck Door and Reinforced Flightdeck Door Surround. · AIRCRAFT RECONFIG TECHNOLOGIES, LLC
- [STC ST00952LA](https://openairdocs.org/stc/ST00952LA.md): Installation of Mass Systems fire extinguisher cartridges as replacements for Kidde fire extinguisher cartridges in fire extinguisher bottles. · AMETEK AMERON LLC d/b/a MASS Systems
- [STC SA2622NM](https://openairdocs.org/stc/SA2622NM.md): Installation of Precise Flight Pulselite Control Unit in landing/taxi system. (767-200 B17) (DHC-8 101) · Precise Flight Inc.
- [STC ST04752NY](https://openairdocs.org/stc/ST04752NY.md): Replacement of Dual Analog Radio Altimeter Transceivers with Dual 5G Tolerant Collins Aerospace or Honeywell Digital Radio Altimeters Transceivers and Dual Shadin Digital-to-Analog Converters. S · LB Aircraft Engineering
- [STC ST00030IB](https://openairdocs.org/stc/ST00030IB.md): Installation of Test Tech ELT · APTOZ EHF
- [STC ST09180AC](https://openairdocs.org/stc/ST09180AC.md): Installation of DeVore Wing Forward Position Lights · The Boeing Company
- [STC ST03885AT](https://openairdocs.org/stc/ST03885AT.md): Installation of an Avionica, Inc. avCM Cellular Module · Aircraft Systems and Manufacturing Inc.
- [STC SA2040NM](https://openairdocs.org/stc/SA2040NM.md): Installation of closet and windscreen. · Safran Cabin Inc.
- [STC SA3469NM](https://openairdocs.org/stc/SA3469NM.md): Installation of Closet/Stowage Compartments/Coat Compartment/ Coatroom. · Safran Cabin Inc.
- [STC SA3494NM](https://openairdocs.org/stc/SA3494NM.md): Installation of auxiliary galley. · Safran Cabin Inc. · Lists DC-9 Series
- [STC SA3497NM](https://openairdocs.org/stc/SA3497NM.md): Installation of closet/stowage units. · Safran Cabin Inc.
- [STC SA4744NM](https://openairdocs.org/stc/SA4744NM.md): Installation of Extended Spacial Concept Interior III Retrofit Kit. · Safran Cabin Inc.
- [STC SA4770NM](https://openairdocs.org/stc/SA4770NM.md): Installation of a Modular Lavatory(Retrofit Installation). · Safran Cabin Inc.
- [STC SA4822NM](https://openairdocs.org/stc/SA4822NM.md): Installation of galleys, coatrooms, and a partition. · Safran Cabin Inc.
- [STC SA5542NM](https://openairdocs.org/stc/SA5542NM.md): Installation of galley, stowage unit, coatroom, PSU kit, drop ceiling. · Safran Cabin Inc.
- [STC SA5786NM](https://openairdocs.org/stc/SA5786NM.md): Installation of an overhead life raft stowage compartment kit. · Safran Cabin Inc.
- [STC SA7079NM](https://openairdocs.org/stc/SA7079NM.md): Installation C&D Interiors passenger service units, overhead storage units, sidewall panels, and ceiling panels. · Safran Cabin Inc.
- [STC ST00481SE](https://openairdocs.org/stc/ST00481SE.md): Installation of interior kits. · Safran Cabin Inc.
- [STC ST00686LA](https://openairdocs.org/stc/ST00686LA.md): Installation of galleys, closets, lavatories and partitions. · Safran Cabin Inc.
- [STC ST00687LA](https://openairdocs.org/stc/ST00687LA.md): Installation of Interior Kit. · Safran Cabin Inc.
- [STC ST01056LA](https://openairdocs.org/stc/ST01056LA.md): Installation of galleys, closet, stowage SIA, forward lavatory, bin, class divider (movable), sidewall and ceiling panels. · Safran Cabin Inc.
- [STC ST01336LA](https://openairdocs.org/stc/ST01336LA.md): Installation of a reinforced cockpit door. · Safran Cabin Inc.
- [STC SA3165NM](https://openairdocs.org/stc/SA3165NM.md): Installation of Floor Proximity Emergency Escape Path Marking System. · Bruce Aerospace Inc.
- [STC ST00092LA](https://openairdocs.org/stc/ST00092LA.md): Instalation of interior fluorescent cabin lighting system. · Bruce Aerospace Inc.
- [STC ST00689LA](https://openairdocs.org/stc/ST00689LA.md): Installation of Bruce Industries Overhead Emergency Exit Marking and Locator System. · Bruce Aerospace Inc.
- [STC ST00069AT](https://openairdocs.org/stc/ST00069AT.md): Installation of a Fairchild Digital or Sundstrand Universal expanded parameters digital flight data recorder · Acron Aviation Inc.
- [STC ST01518NY](https://openairdocs.org/stc/ST01518NY.md): Installation of Flight Systems Cabin Surveillance System (CSS). · Acron Aviation Inc.
- [STC ST03560AT](https://openairdocs.org/stc/ST03560AT.md): Installation of L3 Communications Aviation Recorders Micro Quick Access Recorder (uQAR) o · Acron Aviation Inc.
- [STC ST02472AT](https://openairdocs.org/stc/ST02472AT.md): Installation of a mini Quick Access Recorder (QAR) model MKI, MKII, or MKIII · Aircraft Systems and Manufacturing Inc.
- [STC ST00694CH](https://openairdocs.org/stc/ST00694CH.md): Installation of single or dual Honeywell HT-9100 GNSS GPS Navigation Systems. · Amphenol Cable and Interconnect Technologies Inc.
- [STC ST00984CH](https://openairdocs.org/stc/ST00984CH.md): Installation of Rockwell Collins FPI-955 Electronic Horizontal Situation Indicators (EHSI). · Amphenol Cable and Interconnect Technologies Inc.
- [STC ST01017CH](https://openairdocs.org/stc/ST01017CH.md): Installation of an AlliedSignal CAS-81 TCAS II System with dual AlliedSignal Mode S Transponders. · Amphenol Cable and Interconnect Technologies Inc.
- [STC ST01019CH](https://openairdocs.org/stc/ST01019CH.md): Installation of a Rockwell Collins GNLS-910 GPS Flight Management System. · Amphenol Cable and Interconnect Technologies Inc.
- [STC ST01167CH](https://openairdocs.org/stc/ST01167CH.md): Installation of an AlliedSignal MK-VII Enhanced Ground Proximity Warning System. · Amphenol Cable and Interconnect Technologies, Inc.
- [STC ST01404CH](https://openairdocs.org/stc/ST01404CH.md): Installation of Universal Avionics System Corporation Multi-Function Display. · Amphenol Cable and Interconnect Technologies, Inc.
- [STC ST01818CH](https://openairdocs.org/stc/ST01818CH.md): Installation of a Honeywell Enhanced Ground Proximity Warning System. · Amphenol Cable and Interconnect Technologies, Inc.
- [STC ST01887CH](https://openairdocs.org/stc/ST01887CH.md): Installation of GPS antenna provisions. · Amphenol Cable and Interconnect Technologies, Inc.
- [STC ST01992CH](https://openairdocs.org/stc/ST01992CH.md): Installation of a Smiths SDS2000 Electronic Display System. · Amphenol Cable and Interconnect Technologies, Inc.
- [STC ST02316CH](https://openairdocs.org/stc/ST02316CH.md): Upgrade of existing Mode S transponder installation to add enhanced surveillance Mode S · Amphenol Cable and Interconnect Technologies Inc.
- [STC ST01936WI](https://openairdocs.org/stc/ST01936WI.md): Installation of LED lights · AeroLED's Holdings LLC
- [STC ST02770SE](https://openairdocs.org/stc/ST02770SE.md): Installation of an Improved Radio Altimeter System · AeroMech Incorporated
- [STC ST01932AT](https://openairdocs.org/stc/ST01932AT.md): Installation of SAF-T-GLO Aerospace Limited's photoluminescent floor proximity emergency escape path marking system (FPEEPMS) · STG Aerospace Inc.
- [STC ST02876AT](https://openairdocs.org/stc/ST02876AT.md): Installation of a Free Flight Model 2101 I/O Approach Plus Global Positioning System (GPS), Universal Model MFD 640 Multi-function Display (MFD), and Provisions for an Aviation Communication & Surveillance Systems (ACSS) Terrain & Traffic Collision Avoidance System (TTCAS) · Woven Electronics, LLC
- [STC ST02928AT](https://openairdocs.org/stc/ST02928AT.md): Installation of a Honeywell Enhanced Ground Proximity Warning System (EGPWS) · Woven Electronics LLC
- [STC ST00098IB](https://openairdocs.org/stc/ST00098IB.md): Introduction of ADS-B Out · STC Twenty One Limited

Next page: https://openairdocs.org/model/mcdonnell-douglas-dc-9-81-md-81/stcs.md?page=2

## The whole list in SQL

Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS:

```sql
SELECT s.stc_number, s.description, s.holder, s.status, s.status_date, m.matched_model
FROM (
  SELECT stc_number, min(matched_model) AS matched_model
  FROM 'https://openairdocs.org/data/latest/faa_aircraft_model_stc.parquet'
  WHERE aircraft_model_code IN ('3022081')
  GROUP BY stc_number
) m JOIN 'https://openairdocs.org/data/latest/faa_stc.parquet' s USING (stc_number)
ORDER BY s.status = 'Current' DESC, s.status_date DESC, s.stc_number
```

This list as a web page: https://openairdocs.org/model/mcdonnell-douglas-dc-9-81-md-81/stcs

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