SH128WE
Installation of Nightsun SX-10 searchlight Kit No. 019600 when: A TA-30 dual voltage alternator is installed per STC SH131WE; the helicopter is equipped with a Dovsek Model 200C or 300B light mounts, the mount's indicator light conforms to Hughes Service Information Notice #N92. Held by Spectrolab, INC, which holds 6 approved modifications in all. Last revised March 21, 1980. System: instruments and avionics.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Schweizer Aircraft Corporation; Schweizer Aircraft Corporation
- Models
- 269C, 269B
- Type certificates
- 4H12, 4H12
- On this site
- Schweizer 269 300 series helicopters 212 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 7, 2026.