ST11091DS
Installation of Heads-Up Technologies Pre-Recorded Announcement Machine (PRAM). Held by American Airlines INC., which holds 4 approved modifications in all. Last revised February 17, 2025. System: other and general.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Airbus SAS; Airbus SAS
- Models
- A321 Model -253NX, A321 Model -253N
- Type certificates
- 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.