chriscalandro Posted January 5, 2020 Report Posted January 5, 2020 It’s usually not the USB adapter but what’s plugged into it. Quote
Jourdan Urbach Posted January 5, 2020 Report Posted January 5, 2020 Apologies if I muddied the water. I'm not an electrical engineer and do not understand the vicissitudes of voltage, amperage, current, and the like. It's probably something I should rectify in the interest of understanding airplane systems better. Just thought you guys would be interested to know that the IFE (in-flight entertainment) system is what's being implicated in an upcoming mandatory service bulletin related to this fire, and the SF50 owner I know referenced a short related to the USB plug. I'm not sure if he has his facts straight, but it's the closest information I have. Best, -J 1 1 Quote
ArtVandelay Posted January 5, 2020 Report Posted January 5, 2020 In flight entertainment system was responsible for a fire on a number of commercial jets, one was fatal IIRC. Quote
ZuluZulu Posted January 6, 2020 Report Posted January 6, 2020 7 hours ago, ArtVandelay said: In flight entertainment system was responsible for a fire on a number of commercial jets, one was fatal IIRC. Swissair 111 1 1 Quote
Deb Posted January 6, 2020 Report Posted January 6, 2020 CIRRUSNumber: SA19-31Issued: 31 Dec 2019SUBJECT: Non-Essential Interior Electrical Equipment Isolation1. EFFECTIVITYSF50 Serials 0005 & subs2. DESCRIPTIONSF50 Service AdvisoryCirrus Aircraft has been made aware of a cabin fire incident in an SF50 Vision Jet during ground opera- tions. The operator observed smoke exiting from behind the right sidewall interior panel located behind the crew seat (seat 2) and forward of the passenger seat (seat 5). Equipment located in this area of the cabin includes the In-Flight Entertainment (IFE) system, USB power outlets, and 110 VAC power supply. Power to all of this equipment can be removed via the IFE POWER switch located on the center console (as shown below).Although an ongoing investigation has not yet identified a root cause for the incident, as a precaution, and until more information is known, Cirrus Aircraft instructs owners/operators to set the IFE POWER switch in the OFF position at all times; this includes both ground operations and flight operations.Compliance with this Advisory is required until further notice.3. ACTIONSTerminating action for this Service Advisory is pending a resolution to be provided in the release of an upcoming Service Bulletin.EFFECTIVITY:SF50 Serials 0005 & subs 1 Quote
kpaul Posted January 6, 2020 Report Posted January 6, 2020 It seems that labeling something in an aircraft IFE is just asking for trouble. An IFE to the majority of the aviation world is an In-Flight Emergency. Quote
Yetti Posted January 6, 2020 Report Posted January 6, 2020 (edited) It would make alot more sense that the transformer 28V DC to 110VAC lit off. It's going to be the thing that is causing heat in an enclosed space. But I kind of get points for guessing USB and electrical stuff. vape pen left plugged into a USB port is a better story for toasting your jet. Edited January 6, 2020 by Yetti 1 Quote
chriscalandro Posted January 6, 2020 Report Posted January 6, 2020 (edited) 5 hours ago, Yetti said: vape pen left plugged into a USB port is a better story for toasting your jet. Have you ever seen one of those go off? I have, And it's pretty scary. It exploded off a desk, then shot flames waist high for about 10 seconds. Sounds like this isn't that though. I'll go with transformer as well. Edited January 6, 2020 by chriscalandro 1 Quote
tmo Posted January 7, 2020 Report Posted January 7, 2020 For the record, there are "high voltage" (up to 20 volt) USB specs called USB Power Delivery (PD) Not that it is really high voltage, but will feel very differently on your tongue. 2 Quote
MooneyMitch Posted February 17, 2020 Report Posted February 17, 2020 FAA Emergency AD Grounds Cirrus Jet Fleet Larry Anglisano February 15, 2020 After a cabin ground fire destroyed a first-generation Cirrus SF50 Vision Jet, the FAA issued emergency airworthiness directive AD 2020-03-50, which grounds the fleet of jets until faulty audio amplifier circuit cards are removed from the cabin. In the aircraft that melted on the ramp, the FAA wrote in its AD that the pilot observed smoke coming from the right rear cabin sidewall. The smoking components are audio amplifiers that are used to drive the 3.5-MM audio/microphone jacks in the passenger cabin. The part number of the defective circuit card is P/N 38849-01, and the AD says to simply remove all 12 of them from the cabin before the next flight. That generally takes eight hours labor to remove the interior, the circuit cards and put it all back together. Cirrus has been on this before the AD, and already issued service bulletin SBA5X-23-03 for compliance instructions. To date Cirrus has made 97 percent of the SF50 fleet airworthy again through its ASSIST mobile technical team and established service centers. It said over 170 Cirrus jets are back flying since the bulletin was issued on Feb. 7, 2020. Nailing the communication effort, all Cirrus SF50 customers were contacted within 24 hours of the bulletin’s release 2 Quote
0TreeLemur Posted February 23, 2020 Report Posted February 23, 2020 On 12/28/2019 at 10:54 AM, flyboy0681 said: It will buff out. Don't worry, I can fix this. My dad's a TV repairman. He's got an awesome set of tools. -Spicoli, Fast Times at Ridgemont High Quote
chriscalandro Posted February 24, 2020 Report Posted February 24, 2020 As someone who has designed a number of headphone amplifiers, I can’t imagine what they screwed up in the circuit to make it get that hot. it’s not a difficult circuit. 1 Quote
Jerry 5TJ Posted February 24, 2020 Report Posted February 24, 2020 I’m impressed that — Cirrus has already repaired most of the fleet — There are 170 of those jets already flying 1 Quote
Nick Pilotte Posted February 24, 2020 Report Posted February 24, 2020 Jerry, I don’t think they were “fixed” but the problem components were removed and that system disabled until a fix is in place. Quote
PT20J Posted February 26, 2020 Report Posted February 26, 2020 On 1/2/2020 at 4:41 PM, Yetti said: Does Jet A explode? Quote
PT20J Posted February 26, 2020 Report Posted February 26, 2020 On 1/5/2020 at 11:45 AM, Hank said: I have one plugged in in my car that's labeled 2.4A . . . Some plugins advertise higher amperage for quicker charging. USB Power specs courtesy of Wikipedia: Power-related specifications[edit] See also: USB hardware § USB Power Delivery (USB PD) Release name Release date Max. power Note USB Battery Charging 1.0 2007-03-08 5 V, ? A USB Battery Charging 1.1 2009-04-15 5 V, 1.8 A [40] USB Battery Charging 1.2 2010-12-07 5 V, 5 A [41] USB Power Delivery revision 1.0 (version 1.0) 2012-07-05 20 V, 5 A Using FSK protocol over bus power (VBUS) USB Power Delivery revision 1.0 (version 1.3) 2014-03-11 20 V, 5 A USB Type-C rev1.0 2014-08-11 5 V, 3 A New connector and cable specification USB Power Delivery revision 2.0 (version 1.0) 2014-08-11 20 V, 5 A Using BMC protocol over communication channel (CC) on USB-C cables. USB Type-C rev1.1 2015-04-03 5 V, 3 A USB Power Delivery revision 2.0 (version 1.1) 2015-05-07 20 V, 5 A USB Type-C rev1.2 2016-03-25 5 V, 3 A USB Power Delivery revision 2.0 (version 1.2) 2016-03-25 20 V, 5 A USB Power Delivery revision 2.0 (version 1.3) 2017-01-12 20 V, 5 A USB Power Delivery revision 3.0 (version 1.1) 2017-01-12 20 V, 5 A USB Type-C rev1.3 2017-07-14 5 V, 3 A USB Power Delivery revision 3.0 (version 1.2) 2018-06-21 20 V, 5 A USB Type-C rev1.4 2019-03-29 5 V, 3 A USB Type-C rev2.0 2019-08-29 5 V, 3 A Enabling USB4 over USB Type-C connectors and cables. USB Power Delivery revision 3.0 (version 2.0) 2019-08-29 20 V, 5 A [42] Quote
PT20J Posted February 26, 2020 Report Posted February 26, 2020 43 minutes ago, EricJ said: An engineer friend worked at Boeing when the FAA was designing the test of the fire suppressant fuel additive. The FAA got sensitive that it was being called a "crash test" and insisted on calling it a CID -- Controlled Impact Demonstration. It took everyone about a minute to redefine the acronym as Crash in Desert. Skip 1 1 Quote
Yetti Posted February 26, 2020 Report Posted February 26, 2020 1 hour ago, PT20J said: Nice fireball. Don't think it would classify as an explosion. for the people inside it is academic. Now don't get me wrong a diesel injector creates a small explosion to make things happen within the cylinder. https://www.fireengineering.com/2002/10/01/244558/jet-fuel/#gref Quote
Cyril Gibb Posted February 26, 2020 Report Posted February 26, 2020 I was under the impression that all aircraft interior materials were supposed to be self extinguishing. Why did the entire passenger compartment burn so completely? Quote
Yetti Posted February 26, 2020 Report Posted February 26, 2020 CAR-3 The original mooney lower side panels were some version of cardboard. Quote
Ibra Posted February 27, 2020 Report Posted February 27, 2020 (edited) 22 hours ago, Cyril Gibb said: I was under the impression that all aircraft interior materials were supposed to be self extinguishing I think most aviation grade raw materials are fire-retardant rather than fire-resistant, so if someone was around in the cabin they could have stopped the live fire with cutting electrics OFF and using hand extinguishers? I am not sure if there was a delay in reaction: pilot was out looking for a mechanic and his extinguisher while leaving master/electrics ON instead of just giving it a shower with the aircraft extinguisher? It would be good to know how long it did take from smell to smoke/from smoke to completely engulfed, maybe 5min/5min? so something I keep in mind next time I smell electrics on a hot day Edited February 27, 2020 by Ibra Quote
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