# Proposed AD FAA-2018-0803: The Boeing Company Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2018-25-15
- Products: Boeing
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: September 28, 2018, 83 FR 49017
- Comments due: November 13, 2018
- Became: [AD 2018-25-15](https://openairdocs.org/ad/2018-25-15)
- Docket: FAA-2018-0803 (https://www.regulations.gov/docket/FAA-2018-0803, where comments are filed)
- FR document: 2018-20920
- Official PDF: https://openairdocs.org/files/sha256/30/87/30870fd12e404c945601aba943f7581ef0bf36de676888e2e30e02b23a204883 (from https://www.govinfo.gov/content/pkg/FR-2018-09-28/pdf/2018-20920.pdf)
- Federal Register: https://www.federalregister.gov/documents/2018/09/28/2018-20920/airworthiness-directives-the-boeing-company-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/EA1D9BEB382D757E86258316004AAA55.0001
- Page: https://openairdocs.org/proposed/FAA-2018-0803

## Summary

We propose to adopt a new airworthiness directive (AD) for all The Boeing Company Model 727 airplanes. This proposed AD was prompted by a report of cracking in the inboard lower flange and adjacent web near the forward attachment of the outboard flap track at a certain position on a Model 737-300 airplane. The flap tracks of Model 737-300 airplanes are similar to the flap tracks of Model 727 airplanes. This proposed AD would require repetitive detailed inspections and surface high frequency eddy current (HFEC) inspections of each outboard flap track at certain positions for any crack and discrepancy, and applicable on-condition actions. We are proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Sep 28, 2018: Notice of proposed rulemaking (NPRM). (first notice), FR document 2018-20920, comments due Nov 13, 2018 (https://www.federalregister.gov/documents/2018/09/28/2018-20920/airworthiness-directives-the-boeing-company-airplanes)

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