SA3567WE
Installation of single or dual Litton LTN-51 or LTN-72 INS. (1-11 SERIES 401/AK, 410/AQ, 419/EP, 412A/EP). Held by Northrop Grumman Systems Corporation, which holds 62 approved modifications in all. Last revised April 12, 2016. System: other and general.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Airbus
- Models
- BAC 1-11 400 Series
- Type certificate
- A5EU
- 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 7, 2026.