en.wikipedia.org/wiki/Landing_gear
3 corrections found
SK1209, SK2478, and SK2867
The middle flight number is wrong. SAS and its 2007 annual report identify the second flight as SK2748, not SK2478.
Full reasoning
SAS’s own September 12, 2007 press release about the second Dash 8-400 landing-gear accident identifies the flight as SK2748 from Copenhagen to Palanga. SAS’s 2007 annual report also lists the same flight number, SK2748. That contradicts the article’s listing of SK2478.
2 sources
- SAS Annual Report 2007 (English)
In 2007 the SAS Group had three accidents... SK2748 ... following the three accidents involving landing gear.
- Regarding Scandinavian Airlines flight SK2748
Dash 8-400 (Q400) with flight number SK2748 from Copenhagen to Palanga (Lithuania) has been involved in an accident.
Bombardier Aerospace ordered all Dash 8s with 10,000 or more hours to be grounded
This gets the restriction wrong. The contemporaneous SAS release said Bombardier recommended grounding Dash 8-400s with 10,000 landing-gear cycles or more—not hours—and Transport Canada’s directive used a different threshold entirely.
Full reasoning
The article says Bombardier ordered "all Dash 8s with 10,000 or more hours" grounded. SAS’s contemporaneous press release states something different: Bombardier was recommending that Dash 8-400 aircraft with 10,000 landing gear cycles or more be grounded pending inspection. Separately, Bombardier’s own statement about Transport Canada’s airworthiness directive says the required detailed inspection applied to actuators with 8,000 or more landings or more than four years in service, whichever came first. So the article is incorrect on both the metric (hours vs. landing gear cycles/landings) and the nature/scope of the restriction.
2 sources
- Regarding Scandinavian Airlines flight SK2748
Bombardier is highly recommending that all aircraft worldwide of this type with 10,000 landing gear cycles or more will be grounded until the recommended inspection is carried out.
- Bombardier Supports Transport Canada Airworthiness Directive Related to Recent Q400 Landing Gear Issue
The AD requires that a detailed visual inspection of the main landing gear retract actuator be immediately conducted on actuators that have accumulated 8,000 or more landings, or been in service for more than four years since new, whichever comes first.
Each spaceflight system through 2015 had relied on expendable boosters to begin each ascent to orbital velocity.
This is too broad: the Space Shuttle used recoverable/reusable solid rocket boosters, so not every orbital system through 2015 depended on expendable boosters.
Full reasoning
NASA describes the Space Shuttle stack as using two solid rocket boosters and specifically says the shuttle combined reusable solid rocket motor segments and booster subassemblies. NASA’s shuttle history materials also state that the shuttle used recoverable Solid Rocket Boosters. Because the Space Shuttle flew orbital missions from 1981 to 2011, the article’s blanket statement that each spaceflight system through 2015 relied on expendable boosters is incorrect.
2 sources
- The Space Shuttle - NASA
The combination of the reusable solid rocket motor segments and solid rocket booster subassemblies make up the flight configuration solid rocket boosters, or SRBs.
- Report to the President by the Presidential Commission on the Space Shuttle Challenger Accident, Volume 1, Chapter 1 - NASA
Emerging from this round of design decision making was the Space Shuttle: a three-element system composed of the Orbiter, an expendable external fuel tank ... and two recoverable Solid Rocket Boosters.