ATA 05 – TIME LIMITS – MAINTENANCE CHECKS

  • Scheduled Maintenance Checks
    • Zonal inspections – ATA 05 (requirements of the MPD)
    • MPD – Separately provided
    • Airworthiness Limitation Section (ALS) – Separately provided
  • Unscheduled maintenance checks – ATA 05
    • Inspection after special or abnormal conditions
    • Pressurization test after abnormal operation or repair
    • Special or check flights (non-revenue flights)

HARD LANDING

  • Load Report 15 – If hard landing occurs only on MLG
  • If LR15 trigger codes 7XXX – Normal Landing, No Action Required – GO
  • If LR15 trigger codes 4XXX – Hard Landing / Hard Overweight Landing – NOGO
    • Check Nz & Ny kpi values
    • Nz kpi: Vertical acceleration, aircraft gross weight, and roll angle.
    • Ny kpi: Lateral acceleration and bounce landing.
  • Nz kpi / Ny kpi indicator – Aircraft having enhanced DMU/FDIMU.
  • FDIMU (Computer) = DMU part + FDIU part
  • Hard landing on MLG – Assessment is based on Nz kpi and Ny kpi.
    • Green Zone – Normal
      • Trigger codes – 7XXX
    • Amber Zone – Hard / Hard overweight
      • Nz => 1.8 ; Ny => 0.45
      • Trigger codes – 4520 or 4620. (Hard)
      • Trigger codes – 4420 or 4320. (Hard overweight)
      • Inspection required
    • Red Zone – Severe hard / Severe hard-overweight
      • Nz => 2.06 ; Ny => 0.5
      • Trigger codes – 4510 or 4610. (Severe hard)
      • Trigger codes – 4410 or 4310. (Severe hard-overweight)
      • Inspection + Send raw data from DFDR or QAR to Airbus and obey airbus instructions.
  • When there are several valid trigger conditions, the minor triggered code has priority and is the only one printed on the report.
  • Hard landing on NLG – A hard landing on NLG is a landing where flight crew report gives the information about:
    • A touchdown on the NLG or
    • A hard touchdown on the MLG and NLG at the same time or
    • A landing with high pitch-rate de-rotation.
    • >> Inspection + Send raw data from DFDR or QAR to Airbus and obey airbus instructions.
  • You must not use the load report <15> to confirm a hard landing on NLG.
  • Load-Report – Make sure that the applicable load-report print-out is available.
    • If not, check if the related report is available in the DMU/FDIMU memory and do a printout of Stored Reports.
      • MCDU > AIDS > STORED REPORTS
    • Trigger code 1000 is a manual report request. It can not be used for a confirmation of a hard/overweight landing or excessive turbulence.
    • Trigger codes 2000 and 3XXX are not used in report 15.
    • Trigger codes 5XXX – used for excessive turbulence.
  • If you are not sure that the load report values are correct – Download the DFDR data and do a DFDR data analysis to make sure that the values are correct.
    • or Download DMU data to a PCMCIA-CARD. FDIMU is able to record AIDS data on an external Digital AIDS Recorder (DAR) and on an FDIMU integrated Smart AIDS Recorder (SAR) or on the PCMCIA card.
  • If the pilots reported a hard landing event but you cannot find the category of the landing because the load report <15> is not available: – Contact Airbus and Send the raw data of the event from the DFDR or the QAR to Airbus.
    • if the QAR or DFDR data cannot be downloaded immediately – You must do the inspection after a severe hard landing or a severe hard-overweight landing (Red zone). >> If you do not find damage during this inspection, the aircraft can temporarily return to service. >> In the shortest possible period and in less than 200 Flight cycles or 30 days.

BIRD STRIKE

  • Use Gloves – Health Risk
  • Use a plastic bag – to collect bird remains
  • Before start – get information from crew about the flight conditions:
    • Engine behavior,
    • Smell in the air conditioning outlets,
    • Navigation and radio system behavior,
    • Aircraft configuration (position of the landing gears and the flight controls),
    • Flight phase at the time when the impact occurred.
  • Do the inspection in three steps –
    • First step is a walk-around visual inspection of all aircraft surfaces. This is to find signs of bird strike and/or damage (identification of impacted areas). Do the walk-around visual inspection from –
      • Ground
      • Cabin windows
      • 10 FT trestle near – radome and aft pax doors.
    • Second step is cleaning of bird strike signs.
    • Third step is inspection of affected parts/zones.