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Other aircraft modifications

STC SA4624SW

FAA DRS lists SA4624SW as Current · Amended, held by Howell Instruments Inc, for Raytheon Aircraft BH.125 Series 400A, Raytheon Aircraft DH.125 Series 1A/S-522, and Raytheon Aircraft DH.125 Series 3A, and 3 more aircraft configurations. Recorded change: Replace existing N1, N2 and ITT indicators with Howell autotak and autotemp indicators. Snapshot dated June 30, 2026.

FAA-listed holder
Howell Instruments Inc
Aircraft configurations
6
FAA revision date
FAA status
Current · Amended

Recorded modification

What the FAA record covers

Replace existing N1, N2 and ITT indicators with Howell autotak and autotemp indicators.

SA4624SW identifies the approval, recorded holder, named aircraft, and modification scope. It does not confirm kit availability, serial-number effectivity, data rights, price, or installation authority.

Applicability

Aircraft named in FAA DRS

Named aircraft: Raytheon Aircraft BH.125 Series 400A, Raytheon Aircraft DH.125 Series 1A/S-522, and Raytheon Aircraft DH.125 Series 3A, and 3 more aircraft configurations. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Raytheon Aircraft BH.125 Series 400AA3EURaytheon Aircraft DH.125 Series 1A/S-522A3EURaytheon Aircraft DH.125 Series 3AA3EURaytheon Aircraft DH.125 Series 3A/RAA3EURaytheon Aircraft DH.125 Series 400AA3EURaytheon Aircraft HS.125 Series 700AA3EU

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact Raytheon Aircraft BH.125 Series 400A and Raytheon Aircraft DH.125 Series 1A/S-522, and 4 more aircraft configurations model, serial range, and configuration?
  2. 02Which configuration, parts, installation data, limitations, and ICAs apply?
  3. 03Who can legally supply the design data, kit, instructions, and ICAs?
  4. 04What parts, labor, conformity, and return-to-service work are excluded?

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