# STC SP00524SE

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: SMR Technologies, United States
- Description: Installation of SMR Technologies electrothermal propeller deicer P/N SMR2822 as a replacement for McCauley electrothermal propeller deicer P/N B-40183-07 or Safeway electrothermal deicer P/N 6717SW on propellers 4HFR34C652-L106LA, 4HFR34C653/L106FA, 4HFR34C660/L90GA, 4HFR34C662/L108FA, and 4HFR34C663/L106KA.
- Status date: March 15, 2002
- Product: Propeller
- Certification basis: Part 21
- Data sheets: [TCDS P3NE](https://openairdocs.org/tcds/P3NE)
- Certificate PDF: https://openairdocs.org/files/sha256/28/93/289305cd473372e4501124291e25e4f5dedef66f9e50fab9cc2d84e4fd52e788
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/6A19E92DD38E902F85256CC2006223E7.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SP00524SE

## ADs that name it (0)

None.

## Approved models (3)

- McCauley Propeller Systems 4HFR34C6( ) ([TCDS P3NE](https://openairdocs.org/tcds/P3NE))
- McCauley Propeller Systems 4HFR34C7( ) ([TCDS P3NE](https://openairdocs.org/tcds/P3NE))
- McCauley Propeller Systems 4JFR34C7( ) ([TCDS P3NE](https://openairdocs.org/tcds/P3NE))

## 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.

Number SP00524SE This certificate, issued to: SMR Technologies 1778 West State Route 224, Suite A Tiffin, OH 44883 certifies that the change in the type design for the follo wing product with the limitations and conditions therefor as specified hereon meets the airw orthiness requirements of Part 35 of the Federal Aviation Regulations.

Original ProductType Certificate Number: P3NE Make: McCauley Model: 4HFR34C

Description of the Type Design Change: Installation of SMR Technologies electrothermal propeller deicer P/N SMR2822 as a replacement for McCauley electrothermal propeller deicer P/N B-40183-07 or Safeway electrothermal deicer P/N 6717SW on propellers 4HFR34C652/L106LA, 4HFR34C653/L106FA, 4HFR34C660/L90GA, 4HFR34C662/L108FA, and 4HFR34C663/L106KA, in accordance with Drawing List DL-SMR2822, Rev. D, dated April 27, 1998, or later FAA approved revision.

Installation of SMR Technologies electrothermal propeller deicer P/N SMR6722 as a replacement for McCauley electrothermal propeller deicer P/N B-40183-08 or Safeway electrothermal deicer P/N 6722SW on propellers 4HFR34C752/L106LA, and 4HFR34C756/L106MA, in accordance with Drawing List DL-SMR6722, Rev. C, dated April 27, 1998, or later FAA approved revision.

Limitations and Conditions: Approval of this change in type design applies to above model propellers only. This approval should not be extended to other propellers of these models on which other previously approved modifications are incorporated unless it is determined that the relationship between this change and any of those other previously approved modifications will produce no adverse effect upon the airworthiness of those propellers. A copy of this Certificate must be maintained as part of the permanent records for the modified propellers.

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

This certificate and the supporting data which is the ba sis for approval shall remain in effect until surrendered, suspended, revoked, or a termination date is ot herwise established by the Administrator of the Federal Aviation Administration.

Date of application: October 13,1997 Date reissued: May 4, 2000

Date of issuance: June 4, 1998 Date amended: August 4, 1998

(Signature) Acting Manager, Seattle Aircraft Certification Office (Title)

## Every issue (1)

- May 4, 2000: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/28/93/289305cd473372e4501124291e25e4f5dedef66f9e50fab9cc2d84e4fd52e788)

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