# Proposed AD 96-NM-73-AD: de Havilland Model DHC-8-100 and -300 Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 97-13-08
- Action: Notice of proposed rulemaking (NPRM).
- Published: March 18, 1997, 62 FR 12768
- Comments due: April 25, 1997
- Became: [AD 97-13-08](https://openairdocs.org/ad/97-13-08)
- Docket: 96-NM-73-AD
- FR document: 97-6718
- Official PDF: https://openairdocs.org/files/sha256/7d/4e/7d4e187cecee886c3afd560a1e4a2148496f316bb48228f97497d575f1622cc0 (from https://www.govinfo.gov/content/pkg/FR-1997-03-18/pdf/97-6718.pdf)
- Federal Register: https://www.federalregister.gov/documents/1997/03/18/97-6718/airworthiness-directives-de-havilland-model-dhc-8-100-and--300-series-airplanes
- Page: https://openairdocs.org/proposed/96-NM-73-AD

## Summary

This document proposes the supersedure of an existing airworthiness directive (AD), applicable to all de Havilland Model DHC- 8-100 and -300 series airplanes, that currently requires an inspection to detect discrepancies and damage of the low fuel pressure switch adapter/snubber (located on each engine fuel heater), and replacement, if necessary. That AD also requires an inspection to detect gaps or openings in each nacelle and engine-mounted firewall area, and in certain weather seals in the nacelles; and correction of discrepancies. The proposed AD would require certain new modifications to the nacelles that will minimize the passage of flammable fluid through the zones of the nacelle of each engine. The actions specified by the proposed AD are intended to prevent the spread of fire through these zones in the event of an explosion during flight, and consequent structural damage to the airplane.

## Notices in this docket

- Mar 18, 1997: Notice of proposed rulemaking (NPRM). (first notice), FR document 97-6718, comments due Apr 25, 1997 (https://www.federalregister.gov/documents/1997/03/18/97-6718/airworthiness-directives-de-havilland-model-dhc-8-100-and--300-series-airplanes)

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