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11 th AIAC / HUMS2005 Melbourne 15 March 2005 1 Bristow Helicopters & HUMS Andy Evans Quality & Safety Manager [email protected] WC0194

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  • 11th AIAC / HUMS2005 Melbourne 15 March 20051

    Bristow Helicopters & HUMS

    Andy EvansQuality & Safety Manager

    [email protected]

    WC0194

  • 11th AIAC / HUMS2005 Melbourne 15 March 20052

    • This is a review the Bristow experience with:– Health & Usage Monitoring System (HUMS)

    • The leader with HUMS for airworthiness improvement

    – The Helicopter Operational Monitoring Programme (HOMP)

    • The leader with helicopter flight data monitoring• Usage monitoring for operational flight safety purposes• The prefect compliment to HUMS

    Introduction

  • 11th AIAC / HUMS2005 Melbourne 15 March 20053

    The Bristow HUMS Experience

    Leading From the Front

  • 11th AIAC / HUMS2005 Melbourne 15 March 20054

    • Prime contractor for first trial of flight-by-flight HUMS – UK CAA funded trial 1987-1991

    • Developed the ‘IHUMS’ HUMS/CVFDR system – Entered service 1991– Used extensively by Bristow Helicopters worldwide– Widely adopted by other civil operators

    • Compatible with networking of data• Supported with a Diagnostics Manual

    – IHUMS has over 1.5 million hours of experience– Rights now held by Meggitt Avionics

    Bristow’s HUMS History

  • 11th AIAC / HUMS2005 Melbourne 15 March 20055

    • 81 helicopters (including those of partner companies), of 7 types equipped:– 72 IHUMS– 9 TC Holder supported EuroARMS & M’ARMS– Current HUMS operations in UK, Netherlands, Norway

    (Norsk), Nigeria, Mauritania, Kazakhstan, China (inc COHC), Brunei, Indonesia, Thailand, Solomon Islands & Australia

    – TC Holder supported IMD/HUMS to enter service 05Q1– HUMS trials underway in Russia

    Current Fleet

  • 11th AIAC / HUMS2005 Melbourne 15 March 20056

    • Experience introducing new systems:– Bristow first operator with IHUMS on 5 types:

    • AS332, S61, S76, B212, B214ST

    – Bristow first operator with EC155B / M’ARMS (in Nigeria)– SBAS introducing HUMS to the Mil-8 in Sakhalin, Russia– Norsk lead European customer for S-92A / IMD-HUMS

    (05Q1)– Bristow lead civil customer for EC225 / M’ARMS (05Q2)– Working with Bell & Sikorsky for HUMS on 412 & S76C+

    • >650,000 hours of HUMS experience to date– >430,000 hours with AS332L/IHUMS combination

    Experience

  • 11th AIAC / HUMS2005 Melbourne 15 March 20057

    Future Developments

    Condition Indicator tracking

    for diagnosis

    Tracking anomaly trajectory

    Condition Indicator tracking

    away from normality

    5555

    • Bristow are teamed with Smiths for a new UK CAA research initiative• Smiths Data Mining Tool plus machine learning algorithms • Evaluates for abnormalities in combinations of parameters

  • 11th AIAC / HUMS2005 Melbourne 15 March 20058

    • Significant proven safety benefit• HUMS should be seen as standard equipment on new aircraft• Effectiveness is dependent on the:

    – Capability & functionality of the HUMS chosen– Experience & capability of the helicopter operator

    • New HUMS must offer:– At least equivalent levels of safety at entry into service– Operational benefits

    • Need to be able to develop more advanced warning & diagnostics techniques – Need to be able to apply the best to any HUMS

    • Manufacturers need to listen more to key operators– TC Holder HUMS is not automatically better than 3rd party HUMS

    View on HUMS

  • 11th AIAC / HUMS2005 Melbourne 15 March 20059

    The Bristow HOMP Experience

    The Prefect Compliment to HUMS

  • 11th AIAC / HUMS2005 Melbourne 15 March 200510

    HOMP Introduction

    • Helicopter Operational Monitoring Programme • A Flight Data Monitoring programme specific

    to helicopters• UK CAA trials programme started in 1999• Bristow demonstrated HOMP technology

    developed by Smiths was practical & effective– Initially using 5 AS332Ls from Aberdeen & Scatsta

  • 11th AIAC / HUMS2005 Melbourne 15 March 200511

    HOMP Trial Objectives

    • Establish how best to monitor helicopter flight operations

    • Evaluate the safety benefits of monitoring• Evaluate the tools & equipment • Eliminate technical risks• Establish a HOMP management strategy• Assess the operator’s workload• Obtain crew & management ‘buy-in’• Make the lessons widely available to the industry

  • 11th AIAC / HUMS2005 Melbourne 15 March 200512

    How HOMP Works

    • HOMP works with:– FDR data downloaded with HUMS data on the standard HUMS card

    after each flight & stored on server– Operational & weather data imported

    • HOMP makes pro-active use of all this data:– Automatic event detection– Manual analysis of each event– Constructive feedback where appropriate

    • To a specific crew, training staff or by newsletter– Process ensures crew confidentiality – not a ‘spy in the cockpit’

    • HOMP identifies & addresses operational risks: – In a closed loop manner– Before they can lead to incidents & accidents– At low cost

  • 11th AIAC / HUMS2005 Melbourne 15 March 200513

    The HOMP Process

    FDR + Op & Wx data Data Replay,

    Analysis andVerification

    ConfidentialCrew Feedback

    Review Meeting

    Reporting oftrend information

    Changes toHOMP,

    Investigations

    Assessment

    Changes toProcedures,

    Manuals,Training

    etc.

    Essential to HOMP’s

    success is selecting the right HOMP

    Project Manager

  • 11th AIAC / HUMS2005 Melbourne 15 March 200514

    Data Presentations

    Flight DataSimulations

    (FDS)

    Flight Data Traces (FDT)

    Flight DataFlight DataEventsEvents(FDE)(FDE)

    SHL 008

    Flight DataFlight DataMeasurementsMeasurements

    (FDM)(FDM)

  • 11th AIAC / HUMS2005 Melbourne 15 March 200515

    Example HOMP Successes

    070°T

    345°T

    030°T

    Low

    Medium

    High000°

    090°270°

    180°

    30 kts

    40 kts

    20 kts

    10 kts

    Control positions

    0

    10

    20

    30

    40

    50

    60

    70

    80

    90

    100

    0 20 40 60 80 100

    Full left Yaw Pedal Full right

    HOMP event control positions

    Accident control positions

    Rollover Line

    Rollover Line

    Previous Accident Control PositionsHOMP Event Control Positions

    Tail Rotor & Collective Pitch

    0

    20

    40

    60

    80

    100

    0.0 0.5 1.0 1.5 2.0 2.5

    Time (minutes)T

    ail

    Ro

    tor

    (%)

    4

    6

    8

    10

    12

    14

    16

    Co

    llec

    tive

    (d

    egre

    es)

    AutopilotTail Rotor PedalCollective Pitch

    Right

    LeftAP Engaged

    TR Pedal, Collective Pitch & Autopilot vs Time

    Tail Rotor Pedal

    Collective PitchAutopilot Engaged

    Rig Take-off: Time to 35kts

    0

    100

    200

    300

    400

    500

    600

    700

    0 1 2 3 4 5 6 7 8 9 10 11 12 13

    Time (seconds)

    Fre

    qu

    ency

    0

    10

    20

    30

    40

    50

    60

    70

    80

    90

    100

    %Frequency

    Cumulative %

    Fre

    quen

    cy

    Time to 35kts

    Cumulative Percentage(50% point = 4.5 secs)

    Average of turbulence/workload parameter by installation

    0

    0.5

    1

    1.5

    2

    2.5

    3

    3.5

    CAPT

    ANAS

    BRAE

    A

    MCUR

    L

    CAFP

    S

    BRAE

    B

    NPRO

    D

    BRNT

    CSF

    140 NIN

    JUDY TIF

    FS7

    12

    EBRA

    E

    ARMA

    D

    DUNL

    ATH

    ISA

    GALA

    X

    DSTA

    R

    Installation

    Ave

    rag

    e T

    urb

    ule

    nce

    or

    Wo

    rklo

    ad

    Captain

    Brae ABrae B

    Av T

    urbu

    lenc

    e/Wo

    rklo

    ad

    Installation

  • 11th AIAC / HUMS2005 Melbourne 15 March 200516

    Current HOMP Status

    • First operator to have all aircraft at a base monitored• All Bristow North Sea fleet now monitored daily• Bristow now have 98% of the world’s HOMP experience• Implementation underway at overseas Bristow bases • UKOOA has committed its members to implement HOMP on

    all UK offshore helicopters• Other oil companies making HOMP a requirement elsewhere• Potential ICAO recommendation for HOMP• Full trials reports (CAA Papers 2000/2 & 2004/12) available at

    www.caa.co.uk

  • 11th AIAC / HUMS2005 Melbourne 15 March 200517

    View on HOMP

    • Natural, low cost, complement to HUMS• Significant proven safety benefit• Effectiveness is dependent on the:

    – Capability & functionality of the HOMP software– Experience & ability of the HOMP Project

    Manager– Safety culture of the helicopter operator

  • 11th AIAC / HUMS2005 Melbourne 15 March 200518

    Conclusions

    • HUMS & HOMP both offer significant proven safety benefit

    • Selecting the right systems is important• The operator’s experience makes a major

    contribution to the effectiveness of both• Bristow uniquely has the experience & ability

    to maximise safety benefit from both systems• Bristow is committed to continue:

    ‘Leading From the Front’