B737-300 right main landing gear strut svced with nitrogen only. Strut had evidence of fluid leakage. Later landed after 2 cycles with the strut flat.

Home

Browse by month

Random

Latest

About

Contact

Attributes
ACN	355731
Time
Date	199611
Day	Thu
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : den
State Reference	CO
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Light	Night
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B737-300
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	other personnel other
Qualification	other other : other
ASRS Report	355731
Person 2
Affiliation	company : air carrier
Function	other personnel other
Qualification	other other : other
Events
Anomaly	aircraft equipment problem : less severe non adherence : published procedure other anomaly other
Independent Detector	other flight crewa
Resolutory Action	other
Consequence	Other
Supplementary
Air Traffic Incident	other

Narrative:

In sum: during a routine 'B' check on a B737-300 aircraft, I noticed a low strut on the right main landing gear. On closer inspection it appeared the gear might be leaking oil. During the nitrogen service I raised the strut up about 6-8 inches. I found no FOD or damage to the chrome piston. I then wiped the top of the exposed chrome with petroleum grease. The outside temperature being 5 degrees F and I believed the seals were cold soaked. I brought the gear down to the proper pressure. I checked the gear several times throughout the night and found no further evidence of leakage. I was notified a couple of days later that the aircraft landed with a flat strut a couple of cycles later.

Original NASA ASRS Text

Title: B737-300 R MAIN LNDG GEAR STRUT SVCED WITH NITROGEN ONLY. STRUT HAD EVIDENCE OF FLUID LEAKAGE. LATER LANDED AFTER 2 CYCLES WITH THE STRUT FLAT.

Narrative: IN SUM: DURING A ROUTINE 'B' CHK ON A B737-300 ACFT, I NOTICED A LOW STRUT ON THE R MAIN LNDG GEAR. ON CLOSER INSPECTION IT APPEARED THE GEAR MIGHT BE LEAKING OIL. DURING THE NITROGEN SVC I RAISED THE STRUT UP ABOUT 6-8 INCHES. I FOUND NO FOD OR DAMAGE TO THE CHROME PISTON. I THEN WIPED THE TOP OF THE EXPOSED CHROME WITH PETROLEUM GREASE. THE OUTSIDE TEMP BEING 5 DEGS F AND I BELIEVED THE SEALS WERE COLD SOAKED. I BROUGHT THE GEAR DOWN TO THE PROPER PRESSURE. I CHKED THE GEAR SEVERAL TIMES THROUGHOUT THE NIGHT AND FOUND NO FURTHER EVIDENCE OF LEAKAGE. I WAS NOTIFIED A COUPLE OF DAYS LATER THAT THE ACFT LANDED WITH A FLAT STRUT A COUPLE OF CYCLES LATER.

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.