SA01097CH
Extend the lives of the control surfaces and engine yoke beyond the current 20,000 hours by utilizing a Damage Tolerance Methodology and the recurrent inspections called out in the FAA Approved Airplane Maintenance Manual Supplement for Learjet 23. Held by Kitty Hawk Charters. Last revised August 4, 1999. System: engine.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Learjet Inc.
- Models
- Learjet 23
- Type certificate
- A5CE
- 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.