ST03300AT-D
Dog House Installation. Held by Haeco Cabin Solutions LLC, which holds 50 approved modifications in all. Last revised March 11, 2019. System: other and general.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Airbus; Airbus; Airbus; Airbus; Airbus; Airbus; Airbus; Airbus
- Models
- A321 Model-212, A321 Model-213, A321 Model-232, A321 Model -111, A321 Model -112, A321 Model -131, A321 Model -211, A321 Model -231
- Type certificates
- A28NM, A28NM, A28NM, A28NM, A28NM, A28NM, A28NM, A28NM
- On this site
- Airbus A321 931 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 21, 2026.