Skip to content

FAA issues airworthiness directive for certain Pratt & Whitney engines following United incident

Feb. 24, 2021
4 min read
FAA issues airworthiness directive for certain Pratt & Whitney engines following United incident
This post contains references to products from one or more of our advertisers. We may receive compensation when you click on links to those products. Terms apply to the offers listed on this page. For an explanation of our Advertising Policy, visit this page.

Editor's Note

This story has been updated with new information.

The Federal Aviation Administration has issued an Airworthiness Directive (AD) that requires all U.S. aircraft with certain Pratt & Whitney PW4000 engines to undergo further inspections. Tuesday night's AD follows Boeing's recommendation to all airlines to temporarily suspend Boeing 777 flights that use the same engine as involved in Saturday's United Airlines flight 328 incident when the aircraft's Number 2 engine failed in flight.

"The FAA is taking this action as the result of a fan-blade failure that occurred Saturday on a Boeing 777-200 that had just departed from Denver International Airport," the FAA said in its AD. "Although the aircraft landed safely, the failure resulted in damage to the engine, an in-flight engine fire, and damage to the airplane.

"After reviewing the available data and considering other safety factors, the FAA determined that operators must conduct a thermal acoustic image (TAI) inspection of the large titanium fan blades located at the front of each engine. TAI technology can detect cracks on the interior surfaces of the hollow fan blades, or in areas that cannot be seen during a visual inspection."

For more TPG news delivered each morning to your inbox, sign up for our free daily newsletter.

The FAA said it would review the results on a rolling basis.

United has grounded all 24 of its Boeing 777 aircraft that were currently in service and powered by Pratt & Whitney 4000 series engines. United is the only U.S. carrier that has the affected aircraft in its fleet.

Japan's aviation regulator ordered Japan Airlines and All Nippon Airways to ground their respective aircraft. Japan Airlines had 19 777s with Pratt & Whitney engines in service, whereas ANA had 13. Elsewhere in Asia, Korean Air has grounded six of its 777s that use the affected engines and were in service.

On Monday afternoon local time, U.K. Transport Secretary Grant Shapps announced that the Civil Aviation Authority (CAA) has temporarily banned the aircraft from entering U.K. airspace.

Sign up for our daily newsletter

Regarding the situation with Saturday's flight United 328 and Sunday's subsequent grounding of aircraft with similar engine types, the airline told TPG:

Starting immediately and out of an abundance of caution, we are voluntarily and temporarily removing 24 Boeing 777 aircraft powered by Pratt & Whitney 4000 series engines from our schedule. Since yesterday, we’ve been in touch with regulators at the NTSB and FAA and will continue to work closely with them to determine any additional steps that are needed to ensure these aircraft meet our rigorous safety standards and can return to service. As we swap out aircraft, we expect only a small number of customers to be inconvenienced.
Safety remains our highest priority - for our employees and our customers. That’s why our pilots and flight attendants take part in extensive training to prepare and manage incidents like United flight 328. And we remain proud of their professionalism and steadfast dedication to safety in our day to day operations and when emergencies like this occur.

Engine maker Pratt & Whitney said that it allocated a team to work with investigators regarding Saturday's United Airlines incident.

Initial National Transportation Safety Board (NTSB) findings show that the damage of UA328 occurred in the right engine, where two fan blades were fractured and other surrounding blades were also impacted. There was minimal damage to the body of the airplane.

It's possible that this will result in some aircraft substitutions or schedule changes for United customers previously scheduled on these aircraft.

The standard-range version of the airline's PW4000-powered 777-200 is typically used for flights between Hawaii and select mainland hubs, including Denver (DEN), Los Angeles (LAX) and San Francisco (SFO), in addition to flights between Honolulu (HNL) and Guam (GUM).

A number of 777-200ERs, most often used for intercontinental flights, may be impacted as well. In the case of international 777 flights, passengers will likely see little impact, as United should be able to substitute otherwise-identical versions of these internationally configured planes, powered by General Electric GE90 engines, instead.

Here's how to research the aircraft you are currently scheduled to fly.

Additional reporting by Emily McNutt.

Featured image by Photo courtesy of Hayden Smith
Editorial disclaimer: Opinions expressed here are the author’s alone, not those of any bank, credit card issuer, airline or hotel chain, and have not been reviewed, approved or otherwise endorsed by any of these entities.

Top offers from our partners

How we chose these cards

Our points-obsessed staff uses a plethora of credit cards on a daily basis. If anyone on our team wouldn’t recommend it to a friend or a family member, we wouldn’t recommend it on The Points Guy either. Our opinions are our own, and have not been reviewed, approved, or endorsed by our advertising partners.
See all best card offers

TPG featured card

Best card for premium perks while traveling
TPG Editor‘s Rating
Card Rating is based on the opinion of TPG‘s editors and is not influenced by the card issuer.
4 / 5
Go to review

Rewards

2 - 10X points
10XEarn unlimited 10X miles on hotels and rental cars booked through Capital One Travel
5X5X miles on flights booked through Capital One Travel.
2X2 Miles per dollar on every purchase, every day

Intro offer

75,000 bonus miles
Earn 75,000 bonus miles when you spend $4,000 on purchases in the first 3 months from account opening, equal to $750 in travel

Annual Fee

$395

Recommended Credit

740-850
Excellent
Credit ranges are a variation of FICO© Score 8, one of many types of credit scores lenders may use when considering your credit card application.

Why We Chose It

The Capital One Venture X card is one of the best all-round travel credit cards ever launched. Not only is it offering a tremendous welcome bonus, but cardholders can earn tons of miles on everyday spending and receive a 10,000-mile anniversary bonus to boot. Its annual fee is $395, but cardholders can count on up to $300 in statement credits toward travel booked through Capital One Travel each year and other valuable benefits like access to Priority Pass lounges and Capital One’s own growing family of airport lounges.

Pros

  • Excellent welcome offer worth 75,000 miles after you spend $4,000 on purchases in the first three months.
  • Up to $300 in annual travel statement credits toward bookings make through Capital One Travel.
  • 10,000 bonus miles (worth $100 toward travel) each account anniversary.

Cons

  • The $395 annual fee might be expensive for some, but this card’s benefits provide much more value than that.
  • If you don’t travel frequently, this might not be the best card for you.
  • Earn 75,000 bonus miles when you spend $4,000 on purchases in the first 3 months from account opening, equal to $750 in travel
  • Receive up to $300 back annually as statement credits for bookings through Capital One Travel, where you'll get Capital One's best prices on thousands of options
  • Get 10,000 bonus miles (equal to $100 towards travel) every year, starting on your first anniversary
  • Earn unlimited 10X miles on hotels and rental cars booked through Capital One Travel and 5X miles on flights booked through Capital One Travel
  • Earn unlimited 2X miles on all other purchases
  • Unlimited complimentary access for you and two guests to 1,400+ lounges, including Capital One Lounges and our Partner Lounge Network
  • Receive up to a $100 credit for Global Entry or TSA PreCheck®
  • Use your Venture X miles to easily cover travel expenses, including flights, hotels, rental cars and more—you can even transfer your miles to your choice of 15+ travel loyalty programs
  • Named editors' choice for "Best New Credit Card of 2021" by The Points Guy
  • Earn 10 miles per dollar when you book on Turo, the world's largest car sharing marketplace, through May 16, 2023
Best card for premium perks while traveling
TPG Editor‘s Rating
Card Rating is based on the opinion of TPG‘s editors and is not influenced by the card issuer.
4 / 5
Go to review

Rewards Rate

10XEarn unlimited 10X miles on hotels and rental cars booked through Capital One Travel
5X5X miles on flights booked through Capital One Travel.
2X2 Miles per dollar on every purchase, every day
  • Intro Offer
    Earn 75,000 bonus miles when you spend $4,000 on purchases in the first 3 months from account opening, equal to $750 in travel

    75,000 bonus miles
  • Annual Fee

    $395
  • Recommended Credit
    Credit ranges are a variation of FICO© Score 8, one of many types of credit scores lenders may use when considering your credit card application.

    740-850
    Excellent

Why We Chose It

The Capital One Venture X card is one of the best all-round travel credit cards ever launched. Not only is it offering a tremendous welcome bonus, but cardholders can earn tons of miles on everyday spending and receive a 10,000-mile anniversary bonus to boot. Its annual fee is $395, but cardholders can count on up to $300 in statement credits toward travel booked through Capital One Travel each year and other valuable benefits like access to Priority Pass lounges and Capital One’s own growing family of airport lounges.

Pros

  • Excellent welcome offer worth 75,000 miles after you spend $4,000 on purchases in the first three months.
  • Up to $300 in annual travel statement credits toward bookings make through Capital One Travel.
  • 10,000 bonus miles (worth $100 toward travel) each account anniversary.

Cons

  • The $395 annual fee might be expensive for some, but this card’s benefits provide much more value than that.
  • If you don’t travel frequently, this might not be the best card for you.
  • Earn 75,000 bonus miles when you spend $4,000 on purchases in the first 3 months from account opening, equal to $750 in travel
  • Receive up to $300 back annually as statement credits for bookings through Capital One Travel, where you'll get Capital One's best prices on thousands of options
  • Get 10,000 bonus miles (equal to $100 towards travel) every year, starting on your first anniversary
  • Earn unlimited 10X miles on hotels and rental cars booked through Capital One Travel and 5X miles on flights booked through Capital One Travel
  • Earn unlimited 2X miles on all other purchases
  • Unlimited complimentary access for you and two guests to 1,400+ lounges, including Capital One Lounges and our Partner Lounge Network
  • Receive up to a $100 credit for Global Entry or TSA PreCheck®
  • Use your Venture X miles to easily cover travel expenses, including flights, hotels, rental cars and more—you can even transfer your miles to your choice of 15+ travel loyalty programs
  • Named editors' choice for "Best New Credit Card of 2021" by The Points Guy
  • Earn 10 miles per dollar when you book on Turo, the world's largest car sharing marketplace, through May 16, 2023