# STC ST12067AT

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Telair US LLC, United States
- Description: Installation of USCS Door Sill Protectors P/N 70042-101 and 70042-102
- Applied: June 9, 2025
- Status date: July 10, 2025
- Product: Aircraft, Large Airplane
- Certification basis: Part 25
- Data sheets: [TCDS A53EU](https://openairdocs.org/tcds/A53EU)
- Certificate PDF: https://openairdocs.org/files/sha256/e7/c4/e7c49464c58d3125907dc621edb1a525b70fd7ab308078264f4b71dfc249f07d
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID169532202820250724220646.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/ST12067AT

## ADs that name it (0)

None.

## Approved models (5)

- ATR – GIE Avions de Transport Régional ATR72-201 ([TCDS A53EU](https://openairdocs.org/tcds/A53EU))
- ATR – GIE Avions de Transport Régional ATR72-202 ([TCDS A53EU](https://openairdocs.org/tcds/A53EU))
- ATR – GIE Avions de Transport Régional ATR72-211 ([TCDS A53EU](https://openairdocs.org/tcds/A53EU))
- ATR – GIE Avions de Transport Régional ATR72-212 ([TCDS A53EU](https://openairdocs.org/tcds/A53EU))
- ATR – GIE Avions de Transport Régional ATR72-212A ([TCDS A53EU](https://openairdocs.org/tcds/A53EU))

## What the certificate says

Read from the PDF's text layer, without the form's printed wording; the layout is lost and the order can differ. The PDF is the record.

ST12067AT Telair US, LLC 500-A Gateway Drive Goldsboro, NC 27534 Part 25 Federal Aviation Regulations A53EU ATR-GIE Avions de Transport Regional ATR72-201/202/211/212/212A This Door Sill Protectors, P/N 70042-101 and 70042-102 may only be installed onto a ATR72 aircraft, which has been modified by STC ST01761NY, freighter conversion.

(Limitations and Conditions continued on page 3 of 4) 06/09/2025 07/10/2025 for Robert P. Capezzuto Acting Manager, East Certification Branch 4 Installation of USCS Door Sill Protectors P/N 70042-101 and 70042-102, in accordance with Master Drawing List for ATR72 Door Sill Protectors, U.S. Cargo Systems Report Number RPT-04209, Revision 1.0, dated May 15, 2025, or later FAA approved revision.

ST12067AT 4

ST12067AT Limitations and Conditions: (continued)

The installation should not be incorporated in any aircraft unless it is determined that the interrelationship between this installation and any previously approved configuration will not introduce any adverse effect upon the airworthiness of the aircraft.

The installer must determine whether this design change is compatible with previously approved modifications.

If the holder agrees to permit another person to use this certificate to alter a product, the holder must give the other person written evidence of that permission.

A copy of this STC must be included in the permanent record of the modified aircraft.

Aircraft is to be maintained, in accordance with Instructions for Continued Airworthiness for ATR72 Door Sill Protectors, U.S. Cargo Systems Report Number RPT-04208, Revision 2.0, dated June 20, 2025, or later FAA approved revision. The Weight and Balance Manuel Supplement for ATR72 Door Sill Protectors, RPT-04206, Revision 1.0, dated May 8, 2025, or later approved revision, must be made available to the operator at the time of installation.

Certification Basis:

Based on 14 CFR §§ 21.115 and 21.101, and the FAA policy for significant changes in FAA Order 8110.48, the certification basis for the ATR72 airplane is as follows:

ST12067AT Certification Basis: (continued)

a. The type certification basis for the ATR72 series airplane is shown on TCDS A53EU for parts not changed or not affected by the change.

b. The certification basis for parts changed or affected by the change since the reference date of application, June 9, 2025, is based upon part 25 as amended by Amendment 25-146. Based on 14 CFR §§ 21.115 and 21.101, and the FAA policy for significant changes in FAA Order 8110.48, the certification basis for this modification was determined to be:

Regulations at the latest amendment 25-0 through 25-152

25.301, 25.303, 25.305, 25.561, 25.601, 25.603, 25.605, 25.607,

25.609, 25.613(a)(b), 25.619, 25.625, 25.855, 25.857(e), 25.1301

25.1529, 25.1541, 25.1583(c).

Regulations at an intermediate amendment None

Regulations at the amendment level in TCDS A53EU None

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## Every issue (1)

- July 10, 2025: Issued, Current. [certificate](https://openairdocs.org/files/sha256/e7/c4/e7c49464c58d3125907dc621edb1a525b70fd7ab308078264f4b71dfc249f07d)

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