SA964CE
Installation of Aircraft Instrument and Development, Inc. (AID) battery temperature indicating and over temperature warning system. Held by R C Allen Instruments INC, which holds 9 approved modifications in all. Last revised August 1, 1991. System: instruments and avionics.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Israel Aircraft Industries Ltd.; Israel Aircraft Industries Ltd.
- Models
- 1121A, 1121
- Type certificates
- A2SW, A2SW
- 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.