FR 2021-03591

Overview

Title

Airworthiness Directives; The Boeing Company Airplanes

Agencies

ELI5 AI

The FAA wants all Boeing Model 717-200 airplanes to get a new fix because their speed meters got stuck during takeoff, which could make flying dangerous. They are asking the plane owners to update a part and run tests to make sure everything shows the right speed, even though some people think it might be too expensive.

Summary AI

The FAA has finalized a new rule, known as an airworthiness directive (AD), for all Boeing Model 717-200 airplanes due to a report of frozen airspeed indicators during takeoff. The directive requires airlines to modify the air data heat (ADH) system, ensuring correct airspeed is displayed, alongside necessary tests and corrective actions. This step is needed to prevent potential flight safety issues caused by blocked pitot tubes that could lead to a loss of aircraft control. Some industry members supported the rule, while others suggested alternatives, but the FAA decided to implement the proposed measures.

Abstract

The FAA is adopting a new airworthiness directive (AD) for all The Boeing Company Model 717-200 airplanes. This AD was prompted by a report that during takeoff, both the captain's and first officer's airspeed indications froze at 80 knots. This AD requires modifying the air data heat (ADH) system to display the proper airspeed indications, testing, and any applicable corrective actions. The FAA is issuing this AD to address the unsafe condition on these products.

Type: Rule
Citation: 86 FR 10784
Document #: 2021-03591
Date:
Volume: 86
Pages: 10784-10787

AnalysisAI

The Federal Aviation Administration (FAA) recently issued a new regulation known as an airworthiness directive (AD) aimed at ensuring the safety of Boeing Model 717-200 airplanes. This directive stems from an incident where pilots faced frozen airspeed indicators during takeoff. To address this, the FAA mandates that airlines modify their aircraft's air data heat (ADH) system—an essential component responsible for correctly displaying airspeed data. This update is anticipated to mitigate risks related to blocked pitot tubes, which are instrumental in measuring the aircraft's airspeed but can be compromised by environmental factors such as ice.

Significant Issues and Concerns

The document contains technical jargon that could challenge public understanding. Terms like "ADH system" and "AMOC" (Alternative Methods of Compliance) may not be familiar to those outside the aviation industry. Moreover, while the document acknowledges the cost of compliance for modifying these aircraft, it does not provide specific financial details. This lack of clarity could make it difficult for stakeholders to fully understand the financial commitments involved.

Hawaiian Airlines has voiced concerns, recommending that existing cockpit procedures could achieve similar safety outcomes without necessitating costly modifications. They argue that well-established practices among flight crews can circumvent the need for additional technical interventions, suggesting the rule could be financially burdensome and potentially redundant.

Public Impact

Broadly speaking, the adoption of the airworthiness directive underscores the FAA's commitment to aviation safety. Passengers can find reassurance in knowing that regulatory measures are in place to address potential hazards, thereby enhancing the overall safety of commercial air travel. However, the general public might not immediately feel the impact of this directive unless associated costs trickle down to ticket prices, which could happen if airlines pass on compliance costs to consumers.

Impact on Specific Stakeholders

The directive has garnered support from several industry groups, including the Air Line Pilots Association and Boeing itself, aligning with their shared interest in promoting flight safety. However, airlines like Hawaiian Airlines stand at a crossroads, balancing regulatory compliance with operational costs. These modifications could entail significant expenditures, potentially impacting profit margins if not managed effectively.

Overall, while the FAA's new rule aims to fortify safety standards within the aviation sector, it inevitably raises discussions among airlines concerning cost versus safety benefits. The measured approach of allowing airlines to petition for alternative compliance methods indicates a degree of flexibility, but the necessity and practicality of the required changes continue to be points of debate within the industry.

Issues

  • • The document uses technical jargon related to aviation safety that may be unclear to laypeople, such as 'ADH system' and 'AMOC'.

  • • The reference to specific documents like Boeing Alert Service Bulletin 717-30A0009 could be difficult for those without access to Boeing's commercial resources.

  • • The cost of compliance is mentioned but not detailed in terms of specific financial figures, making it hard to assess the potential financial impact on airlines.

  • • The document repeatedly mentions technical procedures and FAA authority without offering layperson-level overviews of their implications.

  • • Operators like Hawaiian Airlines expressed concerns about the costs and necessity of the required modifications, suggesting that the imposed measures could be financially burdensome or redundant given existing procedures.

Statistics

Size

Pages: 4
Words: 2,973
Sentences: 91
Entities: 264

Language

Nouns: 976
Verbs: 258
Adjectives: 108
Adverbs: 19
Numbers: 197

Complexity

Average Token Length:
4.61
Average Sentence Length:
32.67
Token Entropy:
5.62
Readability (ARI):
20.06

Reading Time

about 11 minutes