The U.S. aircraft register, updated daily
Approved modifications · supplemental type certificate · current · amended

ST00952LA

Installation of Mass Systems fire extinguisher cartridges as replacements for Kidde fire extinguisher cartridges in fire extinguisher bottles. Held by Ametek Ameron LLC D/B/A Mass Systems, which holds 6 approved modifications in all. Last revised April 20, 2026. System: other and general.

What it applies to

Kind of product
Aircraft
Design holder
Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; Airbus SAS; ATR - GIE Avions de Transport Régional; ATR - GIE Avions de Transport Régional; ATR - GIE Avions de Transport Régional; ATR - GIE Avions de Transport Régional; ATR - GIE Avions de Transport Régional; ATR - GIE Avions de Transport Régional; ATR - GIE Avions de Transport Régional; BAE Systems (Operations) Limited; BAE Systems (Operations) Limited; BAE Systems (Operations) Limited; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; Bombardier Inc.; Gulfstream Aerospace LP; Gulfstream Aerospace LP; Lockheed Martin Corporation; Lockheed Martin Corporation; Lockheed Martin Corporation; Lockheed Martin Corporation; MHI RJ Aviation ULC; MHI RJ Aviation ULC; MHI RJ Aviation ULC; MHI RJ Aviation ULC; Saab AB Saab Aeronautics; Bombardier Inc.; Bombardier Inc.; Bombardier Inc.; Bombardier Inc.
Models
A318-111, A318-112, A318-121, A318-122, A319-111, A319-112, A319-113, A319-114, A319-115, A319-131, A319-132, A319-133, A320-111, A320-211, A320-212, A320-214, A320-216, A320-231, A320-232, A320-233, A321-111, A321-112, A321-131, A321-211, A321-212, A321-213, A321-231, A321-232, A300 B2-1A, A300 B2-1C, A300 B2-203, A300 B2K-3C, A300 B4-103, A300 B4-203, A300 B4-2C, A300 B4-601, A300 B4-603, A300 B4-605R, A300 B4-620, A300 B4-622, A300 B4-622R, A300 C4-605R Variant F, A300 F4-605R, A300 F4-622R, A310-203, A310-204, A310-221, A310-222, A310-304, A310-322, A310-324, A310-325, A340-211,...
Type certificates
A28NM, A28NM, A28NM, A28NM, A28NM, A28NM, A28NM, A28NM, A28NM, A28NM, A28NM, A28NM, A28NM, A28NM, A28NM, A28NM, A28NM, A28NM, A28NM, A28NM, A28NM, A28NM, A28NM, A28NM, A28NM, A28NM, A28NM, A28NM, A35EU, A35EU, A35EU, A35EU, A35EU, A35EU, A35EU, A35EU, A35EU, A35EU, A35EU, A35EU, A35EU, A35EU, A35EU, A35EU, A35EU, A35EU, A35EU, A35EU, A35EU, A35EU, A35EU, A35EU, A43NM, A43NM, A43NM, A43NM, A43NM, A43NM, A43NM, A43NM, A46NM, A46NM, A46NM, A46NM, A46NM, A46NM, A46NM, A46NM, A46NM, A46NM, A46NM, A46NM, A46NM, A46NM, A53EU, A53EU, A53EU, A53EU, A53EU, A53EU, A53EU, A49EU, A49EU, A49EU, A16WE, A16WE, A16WE, A16WE, A16WE, A16WE, A16WE, A16WE, A16WE, A16WE, A16WE, A1NM, A1NM, A20WE, A20WE, A20WE, A20WE, A20WE, A22WE, A22WE, A22WE, A22WE, A22WE, A22WE, A22WE, A22WE, A22WE, A2NM, A2NM, A2NM, A2NM, A3WE, A3WE, A3WE, A3WE, A3WE, A3WE, A6WE, A6WE, A6WE, A6WE, A6WE, A6WE, A6WE, A6WE, A6WE, T00001SE, T00001SE, T00001SE, T00001SE, T00001SE, T00003NY, A53NM, A53NM, A23WE, A23WE, A23WE, A23WE, A21EA-1, A21EA-1, A21EA-1, A21EA-1, A47NM, A13NM, A13NM, A13NM, T00005NY
On this site
Aerospatiale ATR 72 9 registered
Airbus A300 120 registered
Airbus A319 329 registered
Airbus A320 799 registered
Airbus A321 929 registered
Airbus A330 154 registered
Airbus A340 10 registered
Atr-Gie Avions De Trnsp Rgnl ATR 72 14 registered
Boeing 717 111 registered
Boeing 757 440 registered
Bombardier BD-100 Challenger 300 and 350 878 registered
Bombardier BD-700 Global Express, 5000 and 6000 656 registered
Bombardier CL-600 Challenger and CRJ 1,656 registered
Bombardier DHC-8 Dash 8 and Q400 58 registered
British Aerospace AVRO 146 12 registered
Douglas DC-10 8 registered
Israel Aircraft Industries GALAXY 19 registered
Mcdonnell Douglas Aircraft Co MD-88 10 registered
Mcdonnell Douglas DC-10 17 registered
Mcdonnell Douglas DC-9 93 registered
Mcdonnell Douglas MD-11 104 registered
The FAA's record
On the FAA's site

What an approved modification is

A supplemental type certificate is the FAA's approval of a change to a certified design: a new engine or propeller, avionics, an autopilot, floats, a parachute, a larger fuel tank, an ice-protection kit. The company holding it may sell the kit and the paperwork to owners of the listed models; the modification then becomes part of that aircraft's record. The FAA's list says what was approved and for which models, not how many aircraft carry it.

Source: FAA supplemental type certificates (Dynamic Regulatory System). Register counts from the FAA register of October 7, 2026.