A B737-200 was dispatched in non compliance with the left engine start valve deferred as inoperative electrically but MEL special procedures were not accomplished.

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Attributes
ACN	510138
Time
Date	200105
Day	Wed
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0 msl single value : 25000
Environment
Light	Daylight
Aircraft 1
Make Model Name	B737-200
Operating Under FAR Part	Part 121
Flight Phase	ground : parked
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	maintenance : lead technician
Qualification	technician : airframe technician : powerplant
Experience	maintenance lead technician : 29
ASRS Report	510138
Person 2
Affiliation	company : air carrier
Function	maintenance : technician
Events
Anomaly	aircraft equipment problem : critical maintenance problem : improper maintenance maintenance problem : non compliance with mel non adherence : far non adherence : published procedure
Independent Detector	aircraft equipment other aircraft equipment : left engine duct press. ind. other flight crewa other flight crewb
Resolutory Action	none taken : detected after the fact
Consequence	other
Factors
Maintenance	contributing factor : schedule pressure contributing factor : engineering procedure contributing factor : manuals contributing factor : non availability of parts performance deficiency : testing performance deficiency : non compliance with legal requirements performance deficiency : installation performance deficiency : fault isolation
Supplementary
Problem Areas	Chart Or Publication Maintenance Human Performance Aircraft
Primary Problem	Maintenance Human Performance

Narrative:

During pre-dock runup for a 'B' check, mechanics found the pneumatic flex hose from the main duct to the #1 engine start valve ruptured. After consulting company personnel and engineering, it was decided that the start valve could be manually opened. Engineering authority/authorized document was issued for removing and capping the ruptured line as well as placing the engine start valve on MEL. On climb and from ZZZ, the #1 engine pneumatic pressure pegged out on the pneumatic pressure gauge. A #1 bleed trip was experienced by the flight crew. The flight continued to mco at FL250. This situation arose due to a couple of items: 1) due to a failure on the mechanic's part to notice a tee-fitting downstream of the pressure regulator for the slat valve that is plumbed to the bleed valve regulator. 2) the vagueness of the idc in this area contributed to the tee-fitting being missed upon first inspection. 3) the part we needed wasn't in stock in ZZZ and would not arrive for 4 or 5 hours, so I put pressure on myself unknowingly to dispatch the airplane.

Original NASA ASRS Text

Title: A B737-200 WAS DISPATCHED IN NON COMPLIANCE WITH THE L ENG START VALVE DEFERRED AS INOP ELECTRICALLY BUT MEL SPECIAL PROCS WERE NOT ACCOMPLISHED.

Narrative: DURING PRE-DOCK RUNUP FOR A 'B' CHK, MECHS FOUND THE PNEUMATIC FLEX HOSE FROM THE MAIN DUCT TO THE #1 ENG START VALVE RUPTURED. AFTER CONSULTING COMPANY PERSONNEL AND ENGINEERING, IT WAS DECIDED THAT THE START VALVE COULD BE MANUALLY OPENED. ENGINEERING AUTH DOCUMENT WAS ISSUED FOR REMOVING AND CAPPING THE RUPTURED LINE AS WELL AS PLACING THE ENG START VALVE ON MEL. ON CLB AND FROM ZZZ, THE #1 ENG PNEUMATIC PRESSURE PEGGED OUT ON THE PNEUMATIC PRESSURE GAUGE. A #1 BLEED TRIP WAS EXPERIENCED BY THE FLC. THE FLT CONTINUED TO MCO AT FL250. THIS SIT AROSE DUE TO A COUPLE OF ITEMS: 1) DUE TO A FAILURE ON THE MECH'S PART TO NOTICE A TEE-FITTING DOWNSTREAM OF THE PRESSURE REGULATOR FOR THE SLAT VALVE THAT IS PLUMBED TO THE BLEED VALVE REGULATOR. 2) THE VAGUENESS OF THE IDC IN THIS AREA CONTRIBUTED TO THE TEE-FITTING BEING MISSED UPON FIRST INSPECTION. 3) THE PART WE NEEDED WASN'T IN STOCK IN ZZZ AND WOULD NOT ARRIVE FOR 4 OR 5 HRS, SO I PUT PRESSURE ON MYSELF UNKNOWINGLY TO DISPATCH THE AIRPLANE.

Data retrieved from NASA's ASRS site as of July 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.