Aviation News, Headlines & Alerts
Tag: <span>Airworthiness</span>


Notice Number: NOTC5068


SAIB: CE-14-04

Flight Management Computing Systems; Navigation Database Updates – Data and Procedural Exclusions

Date: November 22, 2013

This Special Airworthiness Information Bulletin is written to inform and remind owners and operators about changes contained in manufacturers’ navigation database updates. The cyclical updates may exclude certain navigation data including approach procedures, which makes this information unavailable for selection on the aircraft flight management system or navigation equipment.

The Federal Aviation Administration (FAA) has determined that the airworthiness concern is not an unsafe condition that would warrant airworthiness directive (AD) action under Title 14 of the Code of Federal Regulations (14 CFR) part 39. The FAA continues to monitor these issues with the original equipment manufacturers (OEMs).

The FAA occasionally has received inquiries regarding missing data within the aircraft’s flight management system or navigation unit. In many scenarios, a pilot has attempted to select or load a particular approach, but is unable to do so and must determine an alternative in flight. This has often led to confusion and questions about how or why the data appears to be missing.

From time-to-time, avionics manufacturers may exclude procedures from the aviation database. The causes driving such removals vary, and while some data may be reinstated one cycle later, other data may remain excluded for longer periods of time.
It is important to note that each avionics manufacturer processes the aeronautical data differently, and procedures excluded on one aircraft or system may not be excluded on another. Avionics manufacturers make data exclusion information available to their customers for consideration before use of affected data in flight operations. Exclusions can frequently be found on the avionics manufacturer’s internet website or may be published in another format as part of the new database cycle.

The FAA recommends that pilots do the following:
1) Become familiar with the most appropriate location where they can find information regarding exclusions from the database that can affect their flight operations.

2) Exercise diligence in their preflight planning by staying informed about data exclusions pertaining to the type of avionics they utilize.

FAA Updates Lightning Protection Airworthiness Standards

The Federal Register

The Federal Aviation Administration is amending the lightning protection airworthiness standards.

New lightning protection regulations are beibg estabkusged for electrical and electronic systems installed on aircraft certificated under parts 23, 27, and 29.

Revised lightning protection regulations are also established for electrical and electronic systems installed on airplanes certificated under part 25.

Two levels of lightning protection for aircraft systems based on consequences of system function failure will be established by this rule.

1.) Catastrophic consequences which would prevent continued safe flight and landing;
2.) Hazardous or major consequences which would reduce the capability of the aircraft or the ability of the flightcrew to respond to an adverse operating condition.

Lightning protection for aircraft systems are to be established according to the aircraft’s potential for lightning exposure. Airworthiness standards establish consistent lightning protection requirements for both aircraft electrical and electronic systems.

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