Aircraft modifications are changes made to the product’s initial type-design with the aim of improving or enhancing the aircraft’s capability according to the operator’s needs and/or regulatory requirements.
21jAeroDesign has extensive experience in installing and testing approved aircraft modifications. We’re holders of the supplemental type certificate (STC) for aircraft modification. This means we are able to make approved changes to an existing type of aircraft, engine or propeller.
ATA 25 – Equipment/Furnishings
The Installation of a Low Frequency Underwater Locating Device (LF-ULD)
CAT.IDE.A.285(f) (COMMISION REGULATION (EU) 2015/2338) makes installation of a underwater locating device operating at a frequency of 8,8 kHz ± 1 kHz mandatory by the 01 Jan 2019, unless the aircraft is operated over routes on which it is at no point more than 180 NM from the shore.
The LF-ULD is a self-powered, fully self-contained device. It operates immediately after emersion in fresh or sea water omitting an electronic pulsing signal. The purpose of the LF-ULD is to assist search and rescue teams in locating aircraft wreckage undersea.
Over 150 installations of this modification have been completed, each one taking around 4 hours. Two brackets are installed on the aircraft structure onto which a composite adapter panel is attached, the LF-ULD is then mounted to the adaptor panel. A placard is installed on the outer face of the cargo lining panel to identify location of the LF-ULD.
A320FAM Zero-Passenger Seat Cabin Configuration
This 21jAeroDesign Supplemental Type Certificate (STC) approves a zero-passenger seat cabin configuration, whereby all passenger seats are removed. The STC provides an aircraft configuration that can be operated with minimum flight crew and without an amendment to the Aircraft Flight Manual (AFM).