# Proposed AD FAA-2008-0360: Bombardier Model DHC-8-400 Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2008-13-07
- Products: Bombardier
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: March 28, 2008, 73 FR 16577
- Comments due: April 28, 2008
- Became: [AD 2008-13-07](https://openairdocs.org/ad/2008-13-07)
- Docket: FAA-2008-0360 (https://www.regulations.gov/docket/FAA-2008-0360, where comments are filed)
- Project: 2007-NM-368-AD
- FR document: E8-6300
- Official PDF: https://openairdocs.org/files/sha256/65/01/65012c8498303d95d9f75e62684d62eff2f00c9ba648c855aa598bc450205d3b (from https://www.govinfo.gov/content/pkg/FR-2008-03-28/pdf/E8-6300.pdf)
- Federal Register: https://www.federalregister.gov/documents/2008/03/28/E8-6300/airworthiness-directives-bombardier-model-dhc-8-400-series-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/A34117FD309082A68625741A004CEBFF.0001
- Page: https://openairdocs.org/proposed/FAA-2008-0360

## Summary

We propose to adopt a new airworthiness directive (AD) for the products listed above. This proposed AD results from mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as:

Several production aircraft have been found with the elevator overload bungees installed in reverse orientation: i.e., larger end outboard rather than inboard. This bungee reversal does not impact normal operation of the elevator, and would not increase the probability of an elevator disconnect. However, if a bungee became disconnected at the inboard side, the corresponding side of the elevator may not center, and this could adversely affect the pitch control of the aircraft.

Loss of elevator pitch control could result in reduced controllability of the airplane. The proposed AD would require actions that are intended to address the unsafe condition described in the MCAI.

## Notices in this docket

- Mar 28, 2008: Notice of proposed rulemaking (NPRM). (first notice), FR document E8-6300, comments due Apr 28, 2008 (https://www.federalregister.gov/documents/2008/03/28/E8-6300/airworthiness-directives-bombardier-model-dhc-8-400-series-airplanes)

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