Two mechanics report on missing the last part of an engineering order to blow air from the #2 engine...

Attributes
ACN	774592
Time
Date	200712
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Environment
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B767-300 and 300 ER
Operating Under FAR Part	Part 121
Flight Phase	ground : maintenance
Person 1
Affiliation	company : air carrier
Function	maintenance : technician
ASRS Report	774592
Person 2
Affiliation	company : air carrier
Function	maintenance : technician
ASRS Report	774593
Events
Anomaly	maintenance problem : improper maintenance non adherence : published procedure
Independent Detector	other other : 1
Resolutory Action	none taken : detected after the fact
Consequence	other
Factors
Maintenance	contributing factor : briefing contributing factor : schedule pressure performance deficiency : scheduled maintenance performance deficiency : non compliance with legal requirements
Supplementary
Problem Areas	Maintenance Human Performance Aircraft
Primary Problem	Maintenance Human Performance

Narrative:

On dec/xa/07 I was working on an engineering order and the person I was working with was reading the paperwork. He missed reading the last part of it that said to blow air from eec to the EPR probes. All the work per the callout was not done. We were both on overtime and were fatigued. There was damage to #2 engine core cowl but we did not open the core because we did not read the last part of engineering order callout. Supplemental information from acn 774593: I was working on aircraft X engineering order on a quick turn. Callback conversation with reporter acn 774592 revealed the following information: reporter stated the aircraft arrived with #2 engine core cowl already damaged inflight from improper latching. They did not open the engine as required by the engineering order because they just did not read the last part of the paperwork; requiring air to be blown from the eec to the EPR probes. This same engine and aircraft had just come out of a heavy check from an outsourced maintenance facility.

Original NASA ASRS Text

Title: TWO MECHANICS REPORT ON MISSING THE LAST PART OF AN ENGINEERING ORDER TO BLOW AIR FROM THE #2 ENG EEC TO THE EPR PROBES DURING AN ACFT QUICK TURN AT THE GATE.

Narrative: ON DEC/XA/07 I WAS WORKING ON AN ENGINEERING ORDER AND THE PERSON I WAS WORKING WITH WAS READING THE PAPERWORK. HE MISSED READING THE LAST PART OF IT THAT SAID TO BLOW AIR FROM EEC TO THE EPR PROBES. ALL THE WORK PER THE CALLOUT WAS NOT DONE. WE WERE BOTH ON OVERTIME AND WERE FATIGUED. THERE WAS DAMAGE TO #2 ENG CORE COWL BUT WE DID NOT OPEN THE CORE BECAUSE WE DID NOT READ THE LAST PART OF ENGINEERING ORDER CALLOUT. SUPPLEMENTAL INFO FROM ACN 774593: I WAS WORKING ON ACFT X ENGINEERING ORDER ON A QUICK TURN. CALLBACK CONVERSATION WITH RPTR ACN 774592 REVEALED THE FOLLOWING INFO: REPORTER STATED THE ACFT ARRIVED WITH #2 ENGINE CORE COWL ALREADY DAMAGED INFLIGHT FROM IMPROPER LATCHING. THEY DID NOT OPEN THE ENGINE AS REQUIRED BY THE ENGINEERING ORDER BECAUSE THEY JUST DID NOT READ THE LAST PART OF THE PAPERWORK; REQUIRING AIR TO BE BLOWN FROM THE EEC TO THE EPR PROBES. THIS SAME ENGINE AND ACFT HAD JUST COME OUT OF A HEAVY CHECK FROM AN OUTSOURCED MAINT FACILITY.

Data retrieved from NASA's ASRS site as of January 2009 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.

Two mechanics report on missing the last part of an engineering order to blow air from the #2 engine eec to the EPR probes during an aircraft quick turn at the gate.