Air carrier pneumatic system malfunction. Access panel missing from engine area.

Attributes
ACN	131597
Time
Date	198912
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : lgw
State Reference	FO
Altitude	msl bound lower : 5000 msl bound upper : 5000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : lgw tower : mco
Operator	common carrier : air carrier
Make Model Name	Widebody, Low Wing, 3 Turbojet Eng
Navigation In Use	Other
Flight Phase	climbout : intermediate altitude
Route In Use	departure other enroute : atlantic
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 700 flight time total : 9000 flight time type : 3000
ASRS Report	131597
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	other flight crewa
Resolutory Action	flight crew : overcame equipment problem none taken : anomaly accepted
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

During climb out from lgw, crew noticed illumination of #3 engine pneumatic high pressure light, concurrent with illumination of #3 reverser valve open and #3 pack off lights. Secured #3 engine pneumatics. Shortly thereafter, a F/a reported that a passenger had observed what appeared to be a missing access panel from the #3 engine pylon area. Second officer inspected #3 engine area and confirmed missing panel. Contacted lgw operations/maintenance. Informed them of indications and suggested a runway sweep by performed for possible contamination. None found. Contacted company maintenance on HF. Informed them of all indications and action taken. All aircraft indications and flight conditions remained normal. Relayed same to company maintenance approximately each 1 1/2 hours during flight. Proceeded to den (destination) and, after gate arrival, unable to shut down #3 engine. Called maintenance to secure engine. Preliminary inspection revealed faulty duct/clamp on #3 engine pneumatic system. Still awaiting final disposition of maintenance inspection and correction.

Original NASA ASRS Text

Title: ACR PNEUMATIC SYSTEM MALFUNCTION. ACCESS PANEL MISSING FROM ENGINE AREA.

Narrative: DURING CLBOUT FROM LGW, CREW NOTICED ILLUMINATION OF #3 ENG PNEUMATIC HIGH PRESSURE LIGHT, CONCURRENT WITH ILLUMINATION OF #3 REVERSER VALVE OPEN AND #3 PACK OFF LIGHTS. SECURED #3 ENG PNEUMATICS. SHORTLY THEREAFTER, A F/A RPTED THAT A PAX HAD OBSERVED WHAT APPEARED TO BE A MISSING ACCESS PANEL FROM THE #3 ENG PYLON AREA. S/O INSPECTED #3 ENG AREA AND CONFIRMED MISSING PANEL. CONTACTED LGW OPS/MAINT. INFORMED THEM OF INDICATIONS AND SUGGESTED A RWY SWEEP BY PERFORMED FOR POSSIBLE CONTAMINATION. NONE FOUND. CONTACTED COMPANY MAINT ON HF. INFORMED THEM OF ALL INDICATIONS AND ACTION TAKEN. ALL ACFT INDICATIONS AND FLT CONDITIONS REMAINED NORMAL. RELAYED SAME TO COMPANY MAINT APPROX EACH 1 1/2 HRS DURING FLT. PROCEEDED TO DEN (DEST) AND, AFTER GATE ARR, UNABLE TO SHUT DOWN #3 ENG. CALLED MAINT TO SECURE ENG. PRELIMINARY INSPECTION REVEALED FAULTY DUCT/CLAMP ON #3 ENG PNEUMATIC SYS. STILL AWAITING FINAL DISPOSITION OF MAINT INSPECTION AND CORRECTION.

Data retrieved from NASA's ASRS site as of August 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.