SA2138NM
Installation of a belly mounted Norton Radome, a radar unit mounting hole in the belly pressure vessel, a drop chute access hole in the pressure vessel near the rear door, rerouted primary control cables with associated support brackets and an electronic rack in the aircraft cabin. Held by Aar Oklahoma INC, which holds 24 approved modifications in all. Last revised July 22, 1988. System: cabin, seats and restraints.
What it applies to
- Kind of product
- Aircraft
- Design holder
- True Flight Holdings LLC
- Models
- AA-1C
- Type certificate
- A11EA
- 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 8, 2026.