Action
Supplemental notice of proposed rulemaking (SNPRM).
Summary
The FAA is amending its proposal to prohibit the filtering of some original flight recorder sensor signals. Comments to the NPRM published in November 2006 and changes in available technology have caused us to reexamine our position on data filtering. We are now proposing that certain critical data parameters may be filtered if a certificate holder can show that the data can be accurately reconstructed. This proposed rule would improve the integrity and quality of the data recorded on digital flight data recorders while giving aircraft designers and operators more flexibility in system design and operation where allowable, including an option to filter data.