FAA Issues SAFO For L-39 Canopies | Aero-News Network
Aero-News Network
RSS icon RSS feed
podcast icon MP3 podcast
Subscribe Aero-News e-mail Newsletter Subscribe

Airborne Unlimited -- Recent Daily Episodes

Episode Date

Monday

Tuesday

Wednesday

Thursday

Friday

Airborne On ANN

Airborne 09.26.16

Airborne 09.27.16

Airborne 09.21.16

Airborne 09.22.16

Airborne 09.23.16

Airborne Hi-Def On YouTube

Airborne 09.26.16

Airborne 09.27.16

Airborne 09.21.16

Airborne 09.22.16

Airborne 09.23.16

Wed, Feb 06, 2013

FAA Issues SAFO For L-39 Canopies

Possible In-Flight Separation Prompts The Safety Alert

The FAA has released a Safety Alert for Operators (SAFO) directed to owners, operators, repair stations, and mechanics holding Airframe and Powerplant (A&P) certificates, concerning service difficulties and safety issues associated with the Aero Vodochody L-39C and L-39ZA variants. According to the agency, aircrews have experienced one or both canopies separating from the aircraft, or partially opening, while in-flight.

These instances have occurred with a CANOPY LOCKED indication from the aircraft’s annunciator panel warning light. Analyses of these events show a potential for a false indication from the canopy unlock light. Some of the possible causes for this problem include misalignment of the microswitches sensing the canopy position; failure of the latches on the right side of the canopy to fully engage, possibly caused by a physical obstruction or foreign object interfering with the latches; the canopy hold-open bar becoming distorted and obstructing the right-side canopy latches; and the canopy latches becoming misaligned, subject to wear, corrosion, faulty components, or improper maintenance.

It is advised that the actions below be accomplished every 100 hours of flight time, or as incorporated into the aircraft’s inspection program:

  • Inspect the micro switches in the front and rear canopy lock mechanism and make sure they are functioning and aligned per instructions in the Aero Vodochody factory maintenance manual. Perform these checks with the canopy both installed and removed.
  • Inspect the canopy for any foreign objects which may interfere with the right side latching mechanism.
  • Inspect the condition of the hold-open bars at the front and rear canopies. The bars are located on the right rear portion of the front canopy or on the right front section of the rear canopy. They should not be bent, distorted, or otherwise damaged.
  • With the canopy removed, inspect the canopy latches and verify the latches are holding and the springs are tight per procedures in the Aero Vodochody factory maintenance manual.
  • Place placards in view of front and rear seat occupants asking them to ensure that the canopy is secure prior to flight.
  • Amend the aircraft checklist to include checking of the canopy to ensure that it is secure.

The FAA says that owners, operators, repair stations, and mechanics that operate and maintain Aero Vodochody L-39C and L-39ZA airplanes should familiarize themselves with the information found in this SAFO, and in the associated Airworthiness Certification job aid.

(L-39 image from file)

FMI: www.faa.gov

Advertisement

More News

AeroSports: EAA Surpasses 200,000 Members

The Association Continues To Grow And Engage Flying Enthusiasts EAA has reached a major milestone, as the association has surpassed 200,000 members. It appears that more and more p>[...]

Klyde Morris (09.26.16)

Klyde Can't Miss The 'TSA Obnoxious Olympics' FMI: www.klydemorris.com>[...]

Airborne 09.23.16: GA Pilot Sues SFO, Drone Legalities, EAA Hall Of Fame

Also: Zenith Open Hangar Days, KSMO Nonsense, Recalled Devices, Piper M600, 800th TBM, NASAO, Commercial Space The pilot of the last piston airplane based at San Francisco Internat>[...]

Aero-News: Quote of the Day (09.26.16)

"At this stage of the investigation, preliminary review of the data and debris suggests that a large breach in the cryogenic helium system of the second stage liquid oxygen tank to>[...]

SpaceX On Track To Determining AMOS-6/Falcon 9 Accident Cause

'Anomaly' Resulted In Loss of Rocket, Payload and Extensive Launch Complex Damage As promised, SpaceX is starting to reveal details of their investigation into the catastrophic los>[...]

blog comments powered by Disqus



Advertisement

Advertisement

Podcasts

Advertisement

© 2007 - 2016 Web Development & Design by Pauli Systems, LC