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 04.20.15

Airborne 04.21.15

Airborne 04.22.15

Airborne 04.23.15

Airborne 04.24.15

Airborne Hi-Def On YouTube

Airborne 04.20.15

Airborne 04.21.15

Airborne 04.22.15

Airborne 04.23.15

Airborne 04.24.15

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

Airborne 04.24.15: DA62 Cert, Flt Design's C4, Sporty Transitions, 1st Flt Fight

Also: Legend Cub, Piper Orders, Postal UAVs?, IMC Club 'Brown Jacket Award', X-47B Refueling The Diamond DA62 has received its EASA Type certificate. After a sunny and warm day Wed>[...]

Airborne 04.24.15: DA62 Cert, Flt Design's C4, Sporty Transitions, 1st Flt Fight

Also: Legend Cub, Piper Orders, Postal UAVs?, IMC Club 'Brown Jacket Award', X-47B Refueling The Diamond DA62 has received its EASA Type certificate. After a sunny and warm day Wed>[...]

Airborne 04.23.15: Able Flight, Diesel Archer, RutanRC!

Also: United Bars Security Expert, Airborne Advisors, NTSB Video, Avidyne, Cessna, Airport Access Tempest Plus Marketing Group has announced support for Able Flight as a Platinum L>[...]

ANN's Daily Aero-Linx (04.25.15)

Helicopter History Site This historical evolution of rotary wing aircraft is dedicated to all those that were involved in the development of the most versatile vehicle known by man>[...]

ANN's Daily Aero-Term (04.25.15): Previously Manufactured Aircraft

Existing aircraft-like vehicles meeting the definition of light-sport aircraft that do not meet the provisions of 14 CFR part 103, Ultralight vehicles, and are in a ready-to-fly co>[...]

blog comments powered by Disqus



Advertisement

Advertisement

Podcasts

Advertisement

© 2007 - 2015 Web Development & Design by Pauli Systems, LC