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

ST04372NY

Installation of saf-Tglo® SSUL23 Photoluminescent Aisle Path Marking System. Held by Stg Aerospace LTD (United Kingdom), which holds 10 approved modifications in all. Last revised October 2, 2019. System: other and general.

What it applies to

Kind of product
Aircraft
Design holder
Airbus; Airbus; Airbus; Airbus; Airbus; Airbus; Airbus; Airbus; 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; ATR - GIE Avions de Transport Régional; ATR - GIE Avions de Transport Régional; ATR - GIE Avions de Transport Régional; ATR - GIE Avions de Transport Régional; De Havilland Aircraft of Canada Limited; De Havilland Aircraft of Canada Limited; De Havilland Aircraft of Canada Limited; De Havilland Aircraft of Canada Limited; De Havilland Aircraft of Canada Limited; De Havilland Aircraft of Canada Limited; De Havilland Aircraft of Canada Limited; De Havilland Aircraft of Canada Limited; De Havilland Aircraft of Canada Limited; De Havilland Aircraft of Canada Limited; De Havilland Aircraft of Canada Limited; De Havilland Aircraft of Canada Limited; MHI RJ Aviation ULC; MHI RJ Aviation ULC; MHI RJ Aviation ULC; MHI RJ Aviation ULC; MHI RJ Aviation ULC; MHI RJ Aviation ULC; MHI RJ Aviation ULC; MHI RJ Aviation ULC
Models
A340-211, A340-212, A340-213, A340-311, A340-312, A340-313, A340-541, A340-642, A318-111, A318-112, A318-121, A318-122, A319-111, A319-112, A319-113, A319-114, A319-115, A319-131, A319-132, A319-133, A320-211, 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, A310-203, A310-204, A310-221, A310-222, A310-304, A310-322, A310-324, A310-325, A330-201, A330-202, A330-203, A330-223, A330-243, A330-301, A330-302,...
Type certificates
A43NM, A43NM, A43NM, A43NM, A43NM, A43NM, A43NM, A43NM, 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, A46NM, A46NM, A46NM, A46NM, A46NM, A46NM, A46NM, A46NM, A46NM, A46NM, A46NM, A46NM, A46NM, A46NM, A53EU, A53EU, A53EU, A53EU, A53EU, A53EU, A53EU, A53EU, A53EU, A53EU, A53EU, A13NM, A13NM, A13NM, A13NM, A13NM, A13NM, A13NM, A13NM, A13NM, A13NM, A13NM, A13NM, A21EA-1, A21EA-1, A21EA-1, A21EA-1, A21EA-1, A21EA-1, A21EA-1, A21EA-1
On this site
Aerospatiale/Aeritalia ATR 42 16 registered
Aerospatiale ATR 72 9 registered
Airbus A300 120 registered
Airbus A319 329 registered
Airbus A320 797 registered
Airbus A321 931 registered
Airbus A330 155 registered
Airbus A340 10 registered
Atr-Gie Avions De Trnsp Region ATR42 6 registered
Atr-Gie Avions De Trnsp Rgnl ATR 72 14 registered
Boeing Of Canada/Dehav Div DHC-8 6 registered
Bombardier CL-600 Challenger and CRJ 1,656 registered
Bombardier DHC-8 Dash 8 and Q400 58 registered
Dehavilland DHC-8 28 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 20, 2026.