FAA-listed STC holder

National Flight Services, Inc STCs

The Jun 30, 2026 FAA DRS snapshot lists 3 selected supplemental type certificates with status Current under National Flight Services, Inc. The records span 9 public aircraft directories and 2 modification categories. This is a research directory, not a claim that any specific kit or service is currently offered.

listed Current at snapshot

aircraft directories

modification categories

Oct 8, 2010

latest recorded revision

Modification mix

Other aircraft modifications2 Fuel systems1

Aircraft represented

Mitsubishi Heavy Industries MU-2B-3071 STCs Mitsubishi Heavy Industries MU-2B-2070 STCs Twin Commander Aircraft 690A54 STCs Twin Commander Aircraft 69049 STCs Twin Commander Aircraft 690B48 STCs Mitsubishi Heavy Industries MU-2B-1546 STCs Twin Commander Aircraft 68136 STCs Twin Commander Aircraft 680-W28 STCs Twin Commander Aircraft 680-V26 STCs

Recently revised records

Showing the 3 most recently revised records. Category directories provide the complete paginated discovery path.

3 displayed records.

Search every indexed record for this holder. The table below contains the recently revised records shown on this page.

National Flight Services, Inc supplemental type certificates, aircraft applicability, source status and dates
STC and modification	Aircraft / model / TC	Source status and dates	Holder and authority
SA1204CE Installation of two 50 gallon 'slipper' type fuel tanks. (680FL SN 1349-29 only). Fuel systems View record	Twin Commander Aircraft 680-VTC 2A4 Twin Commander Aircraft 680-WTC 2A4 Twin Commander Aircraft 681TC 2A4 Twin Commander Aircraft 690TC 2A4 Twin Commander Aircraft 690ATC 2A4 Twin Commander Aircraft 690BTC 2A4	Current at cited snapshot Revised Oct 8, 2010 Application: Aug 20, 1999	FAA holder: National Flight Services Inc FAA authority record
SA01437CH Installation of Honeywell (Garrett) TPE331-1-151A engines modified by STC SE383CH. Other aircraft modifications View record	Mitsubishi Heavy Industries MU-2B-20TC A2PC Mitsubishi Heavy Industries MU-2B-15TC A2PC Mitsubishi Heavy Industries MU-2B-30TC A2PC	Current at cited snapshot Revised Mar 31, 2002 Application: Not listed	FAA holder: National Flight Services, Inc FAA authority record
SE01604CH Convert Honeywell TPE331-10AV-511B to a TPE331-10AV-511KA. Other aircraft modifications View record	AlliedSignal TPE331-10AVTC E4WE	Current at cited snapshot Revised Jan 4, 2002 Application: Not listed	FAA holder: National Flight Services, Inc FAA authority record

Modification mix

Aircraft represented

Recently revised records

Installation of two 50 gallon 'slipper' type fuel tanks. (680FL SN 1349-29 only).

Installation of Honeywell (Garrett) TPE331-1-151A engines modified by STC SE383CH.

Convert Honeywell TPE331-10AV-511B to a TPE331-10AV-511KA.